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  • 2021-08-24鞋带是怎么做出来的?迄今为止考古发现最古老的鞋 是一双5500年前配有皮制鞋带的鹿皮鞋 现今 我们不需要自己打猎去绑鞋子 可以买到已经制作好的鞋带 而且有不同材质 风格 颜色和长度可选 这家公司主要生产抽绳式鞋带 材质有很多种 有棉布 人造丝和腈纶等 这条生产线是制造聚酯纤维鞋带的 一名工人将预纱 也就是细聚酯纤维线的线锥 安装到绕线机上 她将八股预纱合成一股 绕到机器的一边再放到绕线筒上 接下来她把另外的八股预纱也和成一股 再绕到机器的另一边放到第二个绕线筒上 每八根预纱能制作成一根聚酯纤维粗线 她将这个机器预设了特定的长度 每个线椎都有足够的成品线 长度达71米 对于这种特殊的鞋带来说 这台机器则被编程为可为每个线筒缠绕2800英尺的粗线 另一个工人安装20个线筒到编织机上 每一个线筒 她将粗线的头穿过三个小孔 用以调节线的张力 她将一半的线合到一起并打结 以便于将它们放入机器中 她开始运行这个编织机器 它开始将下面没有打结的部分一并带入机器中 开始持续编织圆形的鞋带 这些齿轮会增加拉力去拉扯编织线 使它们不会太松散 这样才能保证鞋带的粗细一致 成品线大概有一英里长 存放在木桶里 还有一些鞋带是织成而不是编成的 线则会直接被放入锁针机中 这个机器可以同时进行两种编织方法来生产圆线 一旦线已经被织好或者编好 工人会调整缠绕装置的四个金属钉 到需要的鞋带长度 然后她将绳子绕到钉子上 到250次时 这取决于缠绕器的半径 她从尾部剪断 并将线绑到一起 这样便于她将这些转移到包头机 她将每根绳子的中心放到浸泡过腊酸的毡垫上 然后放入机器染料中 染料会将腊酸紧紧包裹在线上 接下来从中间剪断 制作出一条两头坚硬的鞋带 这个头被叫做绳花 这台压机则添加镀镍钢绳花 一般的手提袋也使用这种绳花 工人手动放置两个绳花在绳子上 中间留有一丝缝隙 她开启机器 压紧绳花 然后从缝隙中剪断 这家工厂也制作波浪花边 这是一种缝在衣服上的平整锯齿形装饰 这些花边织机有120年的历史 每个能同时控制13-73个线筒 用的线筒越多 花边就越粗 制作彩色的花边或者织鞋带有两种方法 在织机上放置深浅不一的纯色线筒 或者在每个线筒上放置彩色的线 对于编织的彩色鞋带 在编织机上放置不同深浅的纯色线筒 或者每个线筒上放彩色的线 为了生产出不同的形状和大小 该制造商使用了不同型号尺寸和类型的编织机 使线筒的数量可以从八个达到最多73个 甚至可以让奇数链生产圆形鞋带 偶数链生产扁形鞋带 正是因为有很多的选择性 鞋带可以做到时尚性与功能性的兼备
  • 2021-08-24如何把水泥地面仿制成木地板用这套工具把水泥地仿制成木地板 Leggari混凝土涂层可用于现有水泥地板 它们可以用来制造木纹造型 首先把地面清理干净 然后使用灯丝胶带铺上灌浆线 确保这些线的间距相等 用水打湿地面以达到最佳粘结效果 然后铺上纹理涂层 这将是纹理的底色 制造木纹效果要用到抹泥刀 晾干纹理涂层 然后用Leggari的着色剂喷洒地板 这将会是木板的主体色 通过打磨可以去除凹槽上的污迹 这使底层的颜色显示出来 等着色剂干了之后 撕掉胶带 用吸尘器吸干涂层上的碎屑 清理边缘 再给地板表面刷一层面漆 面漆里的粗砂添加剂能够使它具有防滑效果 该套件可用于室内或室外 它可以防止褪色和紫外线伤害 颜色可以根据所需的外观进行个性化调配
  • 2021-08-24吉尼斯纪录:皮肤上最多的易拉罐让我打破纪录的正是 我的大额头 拍摄于2020年前期 社交隔离政策公布前 我是Kanno Shunichi 是吉尼斯纪录 “利用空气吸力使头部吸住最多易拉罐” 的记录保持者 在很小的时候开始 我的额头就挺宽的 每个人都会时不时地提到 所以我觉得自己有异于他人 得天独厚之处 我会思考如何好好利用这一长处 就是当时我意识到可以用额头吸易拉罐 这件事就是这么开始的 如果你想要把一个易拉罐粘在前额 不需要特殊的皮肤条件 这样挤出皱纹 然后像这样放上一个易拉罐 使劲把易拉罐推向额头 然后松开皱纹 这样减轻皮肤和易拉罐之间的压力 易拉罐就会像吸盘一样贴着 我很喜欢新宿的黄金街 甚至每周都去小酌一杯 我每次带着我的吉尼斯证书 在那边溜达 人们很兴奋 会让我表演 我用自己的技能让他们开心 也收获了很多快乐 事实上 我不只能用头吸易拉罐 用身体也可以 所以我也希望成为用身体吸最多易拉罐的 吉尼斯纪录保持者 尽管我已找到身体吸力特别好的部位 但是把多个易拉罐同时放在身体上 比同时放头上确实更难 现在还没能做到 我需要再多练练 当我最终打破世界纪录 我不敢相信我竟然是世界第一了 每一个人都有其独一无二的特长 一旦你发现它 请将其好好培育起来 好好想想如何使用它 那么你可能会有许多很棒的想法 利用吸力使额头吸住最多的易拉罐
  • 2021-08-24食物有磁性吗?Hi I am Jared, welcome to Fun Science Demos.大家好 我是Jared 欢迎来到《趣味科学实验室》 Do you know a great way to start your day你们知道吗?开始一天的好方法 is with a nice healthy breakfast?是吃一顿健康的早餐 At Fun Science Demos, we like to say that there is science everywhere.在《趣味科学实验室》 我们会发现科学无处不在 You just have to sometimes take the time也许有时候 只需多点耐心 to stop and try and wonder why停下来尝试 并思考原因 and we can even find science in our cereal.我们甚至会发现 麦片里也有科学 Our body is made of cells我们的身体由细胞构成 and those cells need certain things to work这些细胞需要某些物质才能“工作” things like vitamins and minerals比如维他命和矿物质 so where do we get all those vitamins and minerals那么 我们从哪儿得到细胞工作 that our cells need to work?所需的所有维生素和矿物质呢? Well we get those vitamins and minerals from our food我们可以从食物中获取维生素和矿物质 from this bowl of cereal.例如从这碗麦片中 We are going to use science我们将用科学的方法 to take a closer look at one of the most important minerals仔细看看我们在体内发现的 that we find in our bodies: iron.最重要的矿物质之一:铁元素 to take a closer look at the iron that we can find in our cereal.为了能看清谷物中的铁 We are going to need some really strong magnets我们需要某些强吸力的磁铁 Why magnets?为什么是磁铁呢? Because magnets do something really neat因为磁铁靠近含铁物体时 when it gets close to iron会产生强吸引力 the magnets attract the iron.磁铁可以吸引铁 And if magnets can attract the iron we find in the spoon如果磁铁能吸引勺子中的铁 I wonder if we can use the same magnets我想知道 我们是否可以用同样的磁铁 to attract the iron we find in our food.来吸引食物中所含的铁 So we have zoomed in on our nutrition label首先我们给配料表一个特写 and if you look closely如果你们仔细看 right above my finger you should be able to see iron就会发现我手指上方 写着“含铁” And if I look even closer如果再近一点 it says that eating a bowl of this cereal会发现它写着 吃一碗这种麦片 will give my body one hundred percent of the iron就可以提供给我的身体 that it needs each day一天所需的铁元素 There is definitely iron in this cereal!这种麦片确实含铁! Now there is a lot of iron in this spoon铁勺含铁够多 so the magnet can attract it without any problem毫无疑问可以被磁铁吸住 but there is not as much iron in each flake of my cereal.但是我的麦片含铁没有那么多 So how can we get to see them所以我们如何能看到 the magnet and the iron at work ?磁铁起作用呢? Well we need to get creative.我们需要开动脑筋 So we brought in a really big bowl for our cereal首先我们拿来了一个非常大的碗 and we do not need a whole bowl of cereal我们不需要一整碗麦片 we just need one piece, and we filled our bowl with water.只需一片 然后放进盛满水的大碗里 What we are going to try to do然后我们尝试 is float one piece of our cereal on the water让麦片漂在水面上 and put the magnet close to our cereal再慢慢把磁铁靠近麦片 and see if we see something happen.来看看是否会发生些什么 We are going to zoom in so you can get a better look.给个特写 这样你们就能看得更清楚 So we have zoomed it and now we are ready to see现在已经特写了 让我们来见证 science at work in our cereal.麦片里的小科学吧 Let us float our cereal enter the magnets让麦片在水面漂着 然后用强磁铁吸引它 let’s get them close把磁铁靠近些 and can you see what’s happening?你能看到发生什么了吗? I can use the magnets我可以用磁铁 to pull the cereal all across my bowl吸引麦片漂过这个碗 but it’s…what’s happening there?但 这是什么原因呢? Well the iron in the cereal因为麦片里的铁 is attracted to my really strong magnets对我的磁铁也产生吸引力 and man, I can see the magnets朋友们 可以看到磁铁 pulling the iron in the cereal.在吸引麦片中的铁 All you need to do is take a walk down the breakfast cereal aisle in your food store其实你只需要找到商店里卖谷物麦片的货架 and take a closer look at some of the nutrition labels仔细看看一些麦片 of all the different types of cereals.的营养成分标签 This type of cereal actually has 40 percent iron事实上 这种麦片含铁40% but this one right here has 90 percent iron.但这个含铁量高达90% It is really neat to just grab a box of cereal你只需要买一盒麦片 get some water in a really strong magnet一碗水 一块强力磁铁 and try it out for yourself.自己尝试一下 Experiment and see what happens!做个小实验看看吧 See if you can get the iron in the cereal观察你麦片里的铁 to be attracted to the magnet能否被磁铁吸引 but think about this too.你有没有想过 Other foods besides breakfast cereal除了早餐麦片 have iron in them too.其他食物也含铁 I wonder if we could actually use a magnet我想我们也可以用磁铁 with some of those other foods来测试一些其他的食物 and see if we can get the iron to attract to the magnet.看看我们能否用磁铁吸引其中的铁 Let us give it a try.我们来试试吧 A simple Google search will tell you我们先谷歌搜索 what types of food have a lot of iron in them.哪些食物富含铁 Spinach is one of those foods that has a lot of iron in it.菠菜就是一种含铁丰富的食物 I wonder if I could float this spinach leaf我想可以让菠菜叶浮于水面 and see if the iron in the spinach看看菠菜叶中的铁 could be attracted to the magnet.能否被吸引 To do that I am going to break off the stem先摘掉叶茎 and I am going to drop it in my bowl然后把叶子放进我的碗 and we will zoom in and take a closer look我们给个特写 and see what happens.仔细看看发生了什么 Let us drop in our spinach leaf把菠菜叶子放在水面 let us put our magnet next to it and see强磁铁放在它旁边 if something happens.看看会发生什么 You will notice你会注意到 that spinach leaf is following my magnet叶子在跟着磁铁走 because the iron in that leaf因为叶子里的铁 is attracted to the magnet.被磁铁吸引了 Absolutely amazing!太神奇了! Pumpkin seeds also have some iron in them南瓜籽也含铁 so let us see if we can get the iron on our pumpkin seed我们来看看南瓜籽中的铁 to attract to our magnet能否被磁铁吸引 let’s float it in the water.把南瓜籽放水里 Let us get our magnet close to it.把磁铁靠近它 Sometimes we got to get really close有时候我们要离近一点 and now I got it moving.南瓜籽动起来了 The iron in the pumpkin seed is attracted to my magnet.南瓜籽里的铁也被磁铁吸引了 Absolutely cool!太酷了 Remember, scientists like to try things in experiments科学家喜欢在实验中尝试 so I took a field trip to my food store于是我来到食品店 and I looked at some of the nutrition labels仔细看了这些食物的 on all of these foods一些营养标签 and I found that iron is actually in cocoa powder我发现其实 可可粉 and seaweed and chickpeas and oats.海草 鹰嘴豆和燕麦片中都含有铁 I wonder if you could experiment所以我觉得或许你们也能实验一下 if you could become a scientist当个科学家 get some really strong magnets, a bowl of water找一个强力磁铁 一碗水 and see if you could get the iron in these foods看看这些食物中的铁 to be attracted to this magnet.能否被磁铁吸引 If you want to learn more about magnets and how cells work如果想了解更多磁力学和细胞运作的知识 check out our links in the video description.请点击视频里的链接了解 Science is so cool科学很酷 especially when we find it in our food!尤其是当我们在食物中发现它们的时候 Thanks for watching!谢谢观看!
  • 2021-08-247种令人难以置信的3D打印“错觉”我们有“错觉” 也有“魔法” 大家好 很高兴今天能向大家展示 一些我最喜爱的3D打印“错觉”作品 在过去几年中 我一直对别人 如何3D打印出许多物件很感兴趣 包括一些道具 小的实用器件 一家3D打印公司LulzBot 在年初给我送来几台打印机 所以我开始投入3D打印的过程 给自己的物件建模 我偶然发现了一些精彩的 3D打印的错觉作品 今天就展示给你们看 从我最喜欢的其中一个开始 这是我最喜欢的作品之一 你可以看到 这是一个“不可能三角形” 根据你看的视角而变成“可能” 当你把边上对齐时 效果会很棒 说到三角形 这个叫做“彭罗斯三角形” 可以看到 即使我轻微动一下它 这些方盒看起来仍是 按照“不可能三角形” 的方向连起来的 但当你从这个角度‘“打破错觉”时 它的构造就立刻消失了 我把这个错觉作品作为桌上的储钱罐 如果你从低位摄像头仔细看 看正前方 会发现它的柱面其实有两张脸 你可能产生花瓶的轮廓其实是人脸的错觉 有趣的是这个“错觉”还有点实际价值 可以放在桌上装零钱 我3D打印的很多物品 在日常生活中也有所帮助 比如我的办公室门把手坏了 我并没有花25美元去商店买个新的 而是打印了一个有些搞笑的猫形门把手 由于某些原因 我把它打印颠倒了 所以就有了现在颠倒的猫形门把手 另外 我们还经常打印的 是这种小型Go Pro相机底座 当我们进行“NERF枪战” 这种玩过很多次的游戏时 可以拍出很酷的“击杀”镜头 我们要不要拍一些炫酷的“击杀”镜头呢? 要还是不要? “要”或“不要” 我选择“要” Ben 有些可笑的是 当我在办公室时 会给一些设备加上这些小型底座 iPad底座 手机底座 实际上 我还经常把它们带上飞机 因为很难把电脑放在前方座位的靠背上 最近 我把我的遥控飞机撞坏了 确切说是把头部的塑料部件撞裂了 所以我打印了一个全新的宝蓝色机头 但接着又把它撞坏了 三天内摔坏三次 不要告诉Erin 我需要换灯的开关 所以就把它们全换成了乐高底板开关 还在办公室门外安了一个小型钥匙架 还有个简单的作品 使我的Boosted Board免遭撞坏 它是一个小型的塑料头部部件 这就是我说的头部部件 它在你撞到路边的时候起到保护作用 这事时常发生 下一个要展示的错觉作品 需要一个可以上台阶的“口香糖球” 与我之前给你们看过的“错觉”类似 当相机角度合适时 就可以使口香糖球或弹珠 看起来像往上爬 而实际是向下滚的 你也许熟悉3D打印的过程 要不熟悉的话 你首先要将一卷塑料 通过一个很热很热的喷嘴 使其熔化 然后用计算机控制它准确搭建模型 并将融化的塑料 从打印机底板往上 层层叠起 这个错觉很有趣 它由好几部分拼接而成 内部还有齿轮使之运转 我来示范一下 这似乎违背了你对可能存在的事物的认知 一条直线穿过一段拥有曲线轮廓的狭缝 我最喜爱的错觉作品中 当然少不了这些 只有在镜子中才能看到它们的效果 接下来展示镜像错觉如何实现 我们来看这个 在现实中是方形 再看看镜像 看到了圆形 真的难以置信 看到一个圆 天呐 当你把这些圆放到镜子前 得到了一个漂亮的正方形和一个六边形 证明一下这真的是镜像 你们可能认识Belgian Ben 他帮我建模并3D打印了 一些订制的字母 这是第一个 它从Magic变成了Illusion 他还印了我的名字 真贴心 Zach King 就像这样 我准备寄出5个这种作品 给能够完成下方链接的“宝藏探寻”者 请到网站ZachKingMagic.com/TreasureHunt 暂停视频 现在就去做吧 如果你或你的朋友有3D打印机 而你们想知道从哪里获得这些文件 我在下方附上了所有链接 这些是人们上传到网上 供别人欣赏和打印的模型 所以我在下方分享了链接 谢谢观看 你真棒!
  • 2021-08-24如何制作地球仪?My name is Chris Adams.我是Chris Adams I’m a globe maker一名地球仪制作者 and I’ve been making globes for the best part of fourteen years now.迄今为止 我制作地球仪长达十四年 如何制作一个地球仪 To make a globe you start off with a mould要制作一个地球仪 你得从制作模具开始 and you make a very wet mix of plaster先做出一盆未干的灰泥混合物 and swirl it around to make sure there’s a uniform coverage of plaster in the mould.旋转模具 以确保石膏均匀覆盖在其中 When that is dry, you then make a second mix, a wet mix等它干了 再做出第二盆未干的混合物 and pour that in然后倒进去 and re-enforce it with paper.用纸加固 They used to use card or various other materials他们以前用过卡片或其它各种材料 but I’ve found paper is the best但我发现还是纸张最好用 it’s lightweight and still retains its strength.纸的重量轻 而且能保持石膏的强度 When that is dry, it’s blown out of the mould等它干了 就把它从模具里取出来 and the two halves are joined together.接着把两个部分连接在一起 It’s sanded down, rubbed down until they’re very smooth用砂纸磨光到表面平滑为止 and given a final coat of shellac to strengthen it and to seal it.最后给它涂一层清漆来加固和密封 At this stage the map will be applied.在这个阶段 就用得上地图了 They’re called gores, there are usually twelve gores that go around a globe.它们被称为球面三角 一个地球仪上通常遍布有12条 They are stretched onto the globe ensuring all lines match up它们被展开贴在地球仪上 以确保所有线条都能拼合 so there’s no overlaps there’s no underlaps.因此地球仪上毫无重叠或缺漏 Everything should match up nicely.一切都拼合得很好 One of the things you have to bear in mind when applying a gore is the fact that the paper will stretch.在粘贴球面三角时 你必须知道 纸张是有弹性的 It’s designed to stretch two percent in one direction.它被设计为在每个方向上都能拉长2% It has to be printed with that in mind, you have to reduce the artwork two percent to allow for the stretch.印刷时必须要记住减少成品的2% 留下伸展的空间 I’ve been doing it for so long我做这个已经做了很长时间 that it’s quite easy for me to apply the gores and make the lines match up所以粘贴球面三角 对齐线条 and make sure they make sure the paper behaves as I want it to.和确保纸张的正确伸展对我来说是很容易的事 It’s a skill that I’ve leaned and picked up,我已经学会并掌握了这项技能 so I’d like to think I’m quite good these days. 所以我认为我现在很擅长它 Once the gores have been applied they are given a seal一旦球面三角粘贴完毕 就可以盖章了 and then hand coloured, hand tinted然后是手绘和上色 and unusually given an age afterwards to make the globes look old.有时候会把地球仪放置一段时间来做旧 I prefer to think of it as giving them a head start in the ageing process.不过我更愿意称之为提前旧化 I try to remain true to the materials and methods of traditional globe making.我尽量保持使用地球仪制作的传统材料和方法 Obviously, I improve where I can.显然 我也对能够改进的地方进行了改进 A lot of the materials they used traditionally were animal based,传统制作大多使用动物材料 which I like to move away from if I can. 而我想尽可能地避免使用 The plaster I use now is not dissimilar to the plaster that they used 我现在用的灰泥和他们用的没什么不同 but it’s far stronger and harder wearing. 但是我的这种要比他们坚固刚硬得多 So it’s little things that they would have incorporated as well, if they have the chance.他们有如果机会 也会把这些东西混合进去的 Globes were traditionally educational which perhaps isn’t the case these days地球仪是一种在如今也许不太适用的传统教育工具 but I think a globe still has a role to play.但我认为它仍然能够发挥作用 It’s nice to have something tangible in your hands 手里有些实在的东西挺好的 to see exactly where we are in the world, 可以确切地知道我们身在何处 where we’d like to go.我们想去何方 You can spin a globe and see what’s on the other side of it from where you are,你可以转动地球仪来看看在地球的另一侧有些什么 which you can’t necessarily do from a monitor or a book而这是你无法从显示屏和书本上得到的
  • 2021-08-24让水倒流的小实验大家好 今天我们来看看如何让水倒流 这听起来像是无稽之谈 但今天要做的实验 是基于一篇2006年的研究论文 叫自走式莱顿弗罗斯特液滴 在这篇论文中 描述了液滴由于莱顿弗罗斯特效应而自我推动 来顿弗罗斯特效应是指 当液体落在炙热的表面上时 下方会形成一个蒸气层 所以液体不会直接接触炙热的表面 因为中间有一个蒸气层 它可以把水滴从炙热表面隔离开来 所以水滴并不会蒸发掉 只是悬浮在平面上 当我加热这块金属板时 刚开始水会很快会沸腾 当金属板越来越烫时 水滴会在上面蹦蹦跳跳 它不会迅速蒸发 而是会在金属板上悬浮很长时间 就像在疏水状态一样 莱顿弗罗斯特效应在下方产生了一个蒸气层 对水滴产生了作用力 使其保持悬浮状态 重力向下 这个作用力向上 重力向下 所以水滴后面确实存在作用力 这个实验要描述的是 因为莱顿弗罗斯特效应会产生气体推动液滴 如果能制作一个向后凸起的斜面 并一直延伸 那么液滴就能自己往前走 如果没有意外的话 它不只会自己往前走 它还能爬上斜坡 就像爬楼梯一样 我很想做这个实验 但我又不想用机器在金属板上制作这种斜面 因为之前我看过类似的实验 你得用数控机床 高精度机床 在金属板上切割凹槽 使之成一定角度 但现在我意识到 去五金店就能获得这些东西 买一个像这样的锉刀 这种锉刀正是我所需要的 它是一块带有一定角度凹槽的金属 今天我要试试能不能让水在这把锉刀上倒流 首先我们来验证一个概念 我们把锉刀加热到莱顿弗罗斯特温度 也就是能让水滴在上面悬浮的温度 可以看到它在上面悬浮 滚动 但当水滴碰到脊时 它们就被推开了 看上去确实有用 现在锉刀放的还是很平的 但能看到当水滴碰到脊时 就被弹开了 所以它确实能推着水滴往前走 看来这些水滴也能爬上斜坡 我们把锉刀倾斜一点 看水滴能不能爬上去 开始吧 先加热 走起 这太神奇了 看呐 水滴在往上爬 就像是在爬一段向上的楼梯 锉刀是向下倾斜的 而水滴却在往上走 这太酷了 很难想象只需要一把从五金店买的平锉刀 你就能做这样的实验 只用一把平锉刀的问题在于 水滴会滚到边上去 为了避免这个问题 并让水滴呆在一个地方 我要将两把锉刀放在一起 尽量让它在两把锉刀的中间 可以看到它们是向下倾斜的 小球也是向下滚的 但当我滴液滴时 它就往上走了 太酷了 我不能一直让它沿着锉刀往上爬 因为锉刀的中央太烫了 太烫的话就不能产生足够的蒸气 因为蒸气是绝热的 所以无法产生更多的蒸气 没有足够的推力让它前进 所以太烫的话效果就不好了 滴在中间 他们就会往下滚 滴在边上 就会往上爬 所以让水一直能往上爬的关键是 均匀加热 我用锉刀搭的这个是无法实现的 要是有热床的话就好办了 它能均匀地加热 所以水滴能一直往上爬 感谢观看本集《行动实验室》 希望你们喜欢 别忘了点订阅 点击小铃铛就能收到我最新视频的通知 感谢收看 下期再见
  • 2021-08-24吉尼斯纪录:平板支撑平板支撑时间最长的记录(男性) 乔治•胡德(美国) 乔治首次在2013年 创下3小时7分15秒的记录 但落败于2016年一次针锋相对的比赛 现在他又回来了 会打破记录吗? 8小时1分钟 15分钟 乔治想通过这个记录 来提高人们对运动有助于心理健康的意识 挑战过程中 乔治与别人交谈 并倾听了有学习障碍的人描述亲身经历 45分钟 设定目标 保留记录 打破记录 其余的事情就是练习 乔治•胡德 2007年七月 极限运动员 1小时27分 4小时 5小时37分 6小时27分 超过了8小时 8小时15分15秒 乔治•胡德是新的平板支撑记录者 平板支撑时间最长的记录(男) 8小时15分15秒
  • 2021-08-24你能解开这些火柴棍谜题吗?今天我要用火柴棍谜题 娱乐大家 可以试着解答一下 第一题 我把12根火柴摆成这样 你可以只移动三根火柴棍 摆出三个大小相同的方块吗 要求火柴棍必须首尾相连 并且必须使用所有火柴棍 愿意的话 暂停本视频可以给你更多的时间 以下是如何解答的 接下来 我把火柴棍摆成这样 你能够只移动三根火柴 把它摆成四个大小相等的方块吗 可以这样做 这次 我会把火柴棍摆成这样 一个3×3大小的方块 中间摆成一个1×1大小的方块 你能够移动4根火柴 把它摆成三个方块吗 如果你想不出方法 给你一个提示 这些方块不需要大小相同 以下是如何解答的 两个大方块重叠摆放 中间有一个小方块 接下来 我会把火柴棍摆成这样 如何只移动三根火柴 把它摆放成三个大小相同的方块 可以这样做 这和我们解开的第一个火柴棍图案一样 愿意的话 也可以再移动三根火柴 把它摆成我们起初的样子 接下来我要摆出的 是一个数学问题 1加3等于8 这当然是不对的 那你能移动两根火柴使等式成立吗 可以这样做 如果我们把8底部的火柴棍 移到这里 等式的另一边 把这根也移到这儿 我们就得到1加8等于9 等式成立 接下来 我会用三根火柴 摆成一个三角形 你能再用三根火柴 把它摆成四个相同的三角形吗 这道题有些狡猾 实际上 我们会把它摆成立体的 我用另外三根火柴 搭出一个金字塔 现在就有四个相同的三角形 很聪明 不是吗 让火柴棍像这样站住 是有些难的 你可能会发现把火柴棍头部弄湿会有些用 希望你喜欢本视频 如果想观看更多 可以点击下方链接 或者看看我的油管频道页面 保持安全 玩得开心 同时 感谢收看
  • 2021-08-24快速打字技巧每分钟人均能打40个单词 但其实这个速度可以提高一倍 有几条建议可以帮你提高打字速度 进行两种练习能让你打字更快 分别是坐姿和肌肉记忆 先从坐姿说起 最有效的打字姿势是背部挺直平贴椅背 胳膊肘弯曲 同时双脚平放在地面上 找到合适的姿势 会使你打字体验更舒适 并减轻手腕的压力 至于手的位置 把手指放在键盘上 左手食指放在F键 右手食指放在J键 其他手指自然落在键盘中间这一行 这一行也叫“本位键” 若要打的键在这一行外 将手指上下移动 为避免手指乱成一团 你的小拇指应负责“Shift” 大拇指负责空格键 接着我们来看如何形成肌肉记忆 最好的方式是训练自己盲打 也就是说打字时不要看键盘 打开一个空白文档 将你脑海里出现的单词打出来 不要太在意速度 专心避免打错字 如果控制不住去看手 你可以买无刻键盘 或者键盘膜 你也可以选择打开屏幕键盘作为参考 防止自己偷看 操作如下 在搜索栏输入“键盘” 打开“键盘”选项 PC端点击“屏幕键盘” Mac用户则需确保勾选 “在菜单栏中显示虚拟键盘及表情监视器” 现在右上方能看到键盘菜单 在这里可以选择显示虚拟键盘 一旦适应盲打 训练就要步入正轨了 测试速度是练习的好方法 查看视频简介里的链接 提高打字速度需要付出时间和练习 熟能生巧是最重要的一环 这个视频对你有帮助吗? 在评论里告诉我们 若大家知道其他方法 欢迎留言分享
  • 2021-08-24奇妙的水流视错觉喷胶枪 或者 智能手机或笔记本电脑 信号发生器软件 =25赫兹 哇塞 大于25赫兹 等于25赫兹 小于25赫兹 改变频率 奥秘是什么? 错觉 错觉 使用这些参数 并且改变光圈 光圈逐渐变大 光圈逐渐变小
  • 2021-08-24暖手宝的工作原理We’re talking about these funny hand warmers in the shape of a heart.我们今天来谈一下有趣的心型暖手宝 And each one contains a liquid and a little metal clicker每个暖手宝都含有一种液体和一个金属响片 and the point is that this can generate关键在于这能产生 quite high temperatures which will keep your hand warm.相当多的热量让你的手保持温暖 Inside is sodium acetate that is dissolved in water.暖手宝中的醋酸钠溶液 It’s a very concentrated solution.是一种浓缩液 Sodium acetate is made up of ions,醋酸钠是离子晶体 positively charged sodium, negatively charged acetate.钠离子带正电 醋酸根离子带负电 Positive and negative attract each other正负极互相吸引 and so you need energy to pull them apart,需要能量把它们拆开 and you have to imagine a huge array of these.想象一个巨大的阵型 Millions and billions of these, going alternately, positive, negative and so on.数以亿计的离子 正负交替排列 But I can’t afford that amount of model.但我无法提供这么多模型 So I press it down and there we go.按压金属片 然后松手 If I look at it on the screen此时通过热成像观察暖手宝 you can see a blob of warmth coming in the middle of the heart.你能看见暖流从这颗心的中部扩散开 The other heart doesn’t do anything而另一颗心却无现象 and it reaches in…我们伸手去摸…… Oh, it’s really getting warm哇 它真的变暖和了 and it goes up to a temperature about 50 degrees.温度升高到50摄氏度左右 It’s somehow producing crystals that come out sideways and giving out heat,它正以某种方式向旁侧析出结晶并散发热量 which lasts for 20 minutes or so.持续二十分钟左右 What happens is when you click,当你按压暖手宝时 a tiny particle of something is released.释放了一个小颗粒 Some people say it’s a bit of metal,有人说这个小颗粒是一小块金属 others say也有人说 it’s a tiny crystal of sodium acetate that was trapped on the metal surface.是附着在金属响片表面的醋酸钠晶体 It doesn’t matter.这并不重要 You release something你释放出这种物质后 and as soon as you have that first tiny nucleus, the precipitation takes place.一旦形成第一批小结晶核 就会产生沉淀 And you can see the crystals spreading out across the hand warmer你可以看到晶体分散开 遍布整个暖手宝 and the temperature rising.而且温度会上升 暖手宝是如何制成的…… So, when you drop crystals of sodium acetate into water, the ions separate把醋酸钠放入水中时 离子随之被拆开 and because they need energy,因为此过程消耗了能量 the temperature of the water drops and you can see quite nicely with thermal imaging.你可以通过热成像清楚看到水的温度降低 醋酸钠溶解在水中 If you drop sodium acetate crystals into water the water gets cold.如果你把醋酸钠放入水中 水温会降低 It’s getting cold because some of the thermal energy, the heat energy in the water,水温之所以降低是因为这些离子被拆开时 is being used to pull these ions apart.消耗了水中部分热能 This is a physical change,这是一个物理变化 so if they come out of solution, reform their crystals,因此如果它们从溶液中析出 重新形成晶体 you’ll get that energy back.就会产生热量 So the question is how can you get that energy back in your hand warmer.问题在于你怎样才能产生暖手的热量 The way you’ve got to do it,得以成功的方法 is to get as much sodium acetate as possible dissolved in the water. 就是让尽可能多的醋酸钠溶解在水中 And with sodium acetate if you heat the water up如果对溶液进行加热 you can dissolve more and more of the salt.你就可以溶解更多的醋酸钠 So if you go almost to the boiling point of water, hundred degrees centigrade,如果达到了水的沸点 100摄氏度 you can dissolve really a large amount.你就可以大量溶解醋酸钠 What you would imagine that if you dissolve all this stuff up by heating it,你会想如果加热溶解所有这些物质 as soon as you cooled it down you would expect it all to come out again.冷却下来后这些盐会再次析出 But the interesting thing is, that crystals cannot just form in a really clean solution.但有趣的是纯溶液中不会形成结晶 They need to have tiny particles,它们需要小颗粒 doesn’t really matter what of,颗粒是什么实际上并不重要 tiny bit of metal, a tiny crystal to form round.小块金属 形成的圆形结晶 It’s rather like a crowd forming round a single person.它很像一群人围着一个人 It has to have something to start it.必须要从某种物质开始 So if you have a really clean filtered solution, if you cool it down,因此纯滤液冷却后 the sodium acetate stays in solution得到的醋酸钠溶液 and that’s what’s inside your hand warmer.便是暖手宝中所含的液体 So at least your hands will be warm至少在天气寒冷时走路上班 when you walk to work in the freezing conditions.你的手能够暖和些 To reuse the hand warmer you have to heat it up again.你不得不通过再次加热来重复利用暖手宝 So we dropped it into boiling water.因此我们把它放入沸水中 And quite by chance we noticed that不仅如此我们还无意间发现 there were all sorts of interesting bubbles and vortices in the surface of the boiling water.沸水表面产生了各种有趣的气泡和漩涡 So that’s what you have to do to finish it off,以下就是重复利用所需要做的 just put it in there, leave it for a little while,把暖手宝静置在热水中一会儿 you take it out and let it relax取出并让它松弛下来 and it gets cooled down and remains liquid.冷却之后让其保持液态 And if you heat it for a longish time,如果你加热稍长一段时间 all the sodium acetate redissolves所有的醋酸钠会再次溶解 and then if you cool it slowly it will be ready to use again.待它逐渐冷却下来 便可以重新使用 The problem is that if you don’t heat it long enough问题在于如果你没有加热足够长时间 and leave just one or two tiny crystals,而留下了一两个小晶体 it can go off spontaneously and suddenly release its heat.它就会自发脱落并突然释放热量 It’s not dangerous这并不危险 but it means when you go to it to warm your hands但意味着当你用来暖手时 you find it’s fired already.它已经发烫了 诺丁汉大学 英国·中国·马来西亚 视频来自Brady Haran 额外视频编辑James Hennessy Thanks for watching this video感谢观看此视频 and we’d like to thank 此视频的成功制作 Google’s Making and Science team for making it possible.要感谢谷歌的“科学与制造”团队 If you’d like to see more of the videos they’ve helped create如果你想看更多他们赞助的视频 there’s a brilliant playlist; there’s links on the screen and in the description.视频介绍栏里有一个超赞的播放列表和网址 Also if you’d like to see Professor Poliakoff long-awaited appearance另外 如果您想在我的客观性系列中 on my Objectivity series.看到期待已久的Poliakoff教授 There are also links for that.这里也有一个相关的链接 And we’ll be back again soon with more videos with the thermal-imaging camera.我们很快就会带着热成像相机和更多的视频回来
  • 2021-08-24世界上最黑的黑色颜料我想要的颜料是具有冲击力的 因此需要我自己来制作 我叫Stuart Semple 来自英国的伯恩茅斯 我制造出了世界上最黑的黑色颜料 黑色3.0号可以吸收98%的可见光 像黑洞一样 它可以使3D物品看起来趋于平面 像一个黑洞一样 制作过程中 我们使用了化妆品行业的爽肤水 以防止散光反射 我听说艺术家Anish Kapoor 已经享有了这最黑颜料的专利 所以我制作最粉的粉色去挑战他 除了他 每个人都能和我共享这种颜料 当你在网上订购时 你需要证实你不是他 我们创立了一个众筹平台 也是目前第二受欢迎的平台 去制造属于我们自己的最黑的黑色颜料 我们无法快速地生产出 满足所有艺术家的颜料 每个人都需要有机会接触 艺术材料 我认为这才是真理 难道不是吗?
  • 2021-08-24新建茅屋的过程I wrote this book if you’re interested如果你对我写的这本书感兴趣 See link in description.请看视频描述中的链接 Hut in the wet season雨季中的茅屋 Hut after burning down烧毁后的茅屋 I left a fire untended for 15 minutes and it burnt down我十五分钟没照看火 茅屋就烧起来了 Salvaging possessions from fire (mostly only pottery survived)从火中抢救财产(幸存的大多只有陶器) Earlier back in the wet season (before fire, different area)早在雨季时(即火灾之前 不同的地方) Clearing land清理土地 Digging drainage trench around new hut site在新建茅屋的周围挖排水沟 Now in the dry season, making post holes in the ground现在是旱季 在地上钻柱坑 inserting posts把柱子插进柱坑 (1.5 m above ground, 0.5 m below)(距地面一点五米高 零点五米深) 4 posts in a 3 x 3 m square用四根柱子围一个3×3平方米的区域 Cutting roof beam砍几根木材做屋顶梁 Cutting lawyer cane砍澳洲菖蒲 Lashing on roof beam用澳洲菖蒲来绑顶梁 Making a tripod ladder做一个三脚架梯子 4 x 3 m long ridge poles用四根三米长的脊梁木 Forming a pyramidal roof搭建一个金字塔型屋顶 It’s a bit less than 3 m tall屋顶不到3米高 Roof edge屋檐 Rafters梁椽 Frame complete框架完成了 Palm fronds (cut with stone)用石头切割棕榈叶 Splitting fronds撕开叶子 Vine for lashing fronds on用藤蔓绑棕榈叶 Lashing fronds to frame starting at the bottom first先从框架底部开始把棕榈叶绑到框架上 Overlap rows at the corners to form ridge capping在拐角处重复叠放以形成脊盖 Utilising ladder when it gets too high to reach太高够不着的时候可以使用梯子 Getting too close to thatch from inside soon很快就离框架过近 没法从内部盖茅屋顶 So make a roof cap to go on top所以还需要做一个屋盖帽放在顶端 Wrap the fronds right around the top用棕榈叶将屋盖帽包裹好 to prevent rain getting in以防止雨水渗入 Lift cap using a stick用一根棍子穿过屋盖帽顶端的环 put through a loop on top of the cap把屋盖帽挑起来 It’s heavy and它很重 needs to be lifted by sticking one end into the ground需要把棍子的一头插入地下才能挑起来 Then put it onto the apex of the roof然后把它放在茅屋顶端 Take down ladder when happy with roof做好屋顶 就把梯子放下来 Roof should shed rain well屋顶的防雨效果应该很好 (until it rots/gets eaten by insects)(除非它腐烂或被昆虫吃掉) Here’s a walk through of my current area starting with the yam mounds步行穿过我所在的区域 从山药丘出发 The burnt hut ruin烧毁的茅屋废墟 (left to right) A kiln(从左到右)一个窑 a natural draft furnace made of bricks and a charcoal mound一个用砖做成的自然通风炉和一个木炭堆 Path to clearing通往空地的小路 The new hut新的茅屋 Transferring inventory to new location将剩余的东西转移到新的茅屋 Harvesting yams挖山药 The yield is poor because the soil is compacted with little organic material由于土壤板结 几乎不含有机物质 所以产量很低 Some grew on the vine but not much有一些山药长在藤蔓上 但不多 Storing in hut把它们存放在茅屋里 Digging fire pit挖一个火坑 Making fire with hand drill用手钻木取火 (yes I’ll be careful this time)(是的 这次我将会很小心) this part takes a while,这部分要花点时间 it consists of catching the tinder on fire这一过程包括点燃火种 while adding kindling on top同时在顶部添加易燃物 Ok it’s done好了 完成了 Dingo (Australian native dog) howls澳洲野狗(澳洲土犬)在嚎叫 Installing forge blower然后安装锻炉鼓风机 (a larger one with upgraded impeller design old blower(这是一个更大的带有升级叶轮设计的鼓风机 旧的那个 visible in background)在背景里可以看到) Yam from before Wrapping it in mud用泥土包裹之前的山药 Put in fire 30 minutes in the coals把它放入煤堆里烤30分钟 Mud breaks off when taking it out取山药时泥就碎掉了 Yam is well cooked (slightly over cooked,山药烤熟了 (稍微有点烤焦了 will try only 20 minutes next time)下次试试用二十分钟) Wash hands before eating吃之前要洗手 Tastes like a potato, but more starchy.尝起来像土豆 但淀粉含量更高 Lots of energy.能量很足 Hut in the rain雨中的茅屋 Sheds rain well防雨效果很好 Now back to normal projects once again现在可以安心回到其他日常工作中了
  • 2021-08-24可以用复印机印钞票吗?当你复印纸币时会发生什么 好多小伙伴要求我复印纸币 但我一直没有这样做 因为我不认为会有有趣的事情发生 但是我决定还是试一试 然后我震惊了! 嗯…… 看起来像是有某种防护措施 我想知道是纸币有防止复印的性质 还是打印机有识别纸币的保护软件 我准备和其他东西一起放进去复印 来看它是否也会被限制 如果它也被限制了 那说明打印机有保护软件 有意思!打印机识别出了纸币 还对整个页面进行了限制 我想试试我们是否能骗过它 我认为打印机是检测到这些点才会加限制 所以我们盖上这些点再去复印这张纸币! FBI!开门!
  • 2021-08-24用吉他拨片生火生存小技巧 这里是Blackscout小技巧频道 今天的小技巧选自Apocabox 该技巧在2015年2月发布于Aprocabox 如果你还不了解 可以观看以前的视频 这是一个订阅栏目 它主要介绍一些生存技巧 每两个月更新一次 但这次的小技巧是我闻所未闻的 我问Creek能否分享给你们 他同意了 所以我现在要教给你们 这个小技巧其实就是用吉他拨片引火 听起来不可思议 但实际上 制作拨片所用的材料是赛璐珞 这种材料极易点燃 因此你要如何做呢 你需要一根像我手上这样的木棍 上面要有一个像被电钻钻出来的凹槽 把吉他拨片的碎屑放进去 再插入吉他拨片 就像这样 接下来我会向你展示如何操作 直接刮出一些碎屑 放入凹槽里 用刀就可以 刮1-2分钟 然后就能得到碎屑 吉他拨片是个非常不错的选择 它可以随身携带 没人能想到它的真实用途 竟然是用来生火 将刮下的碎屑填进凹槽 再插入你的吉他拨片 所以是既有碎屑又有拨片 然后用打火棒不断擦出火花 就像这样 很多人都会的 你要向着拨片打火花 这样很快就能燃烧起来 再次感谢Creek与我们分享这一技能 欢迎注册并订阅Apocabox 欢迎收看《黑羽生存》栏目学习技巧 观看教程 欢迎订阅 感谢您的收看
  • 2021-08-24把棉花糖放进真空罐会发生什么?《俄国疯骇客》 怎么样?大家最近还好吗? 欢迎回到莫比尔 安全起见戴上墨镜 如果把棉花糖放进真空罐会发生什么呢? 让我们来找出答案 来看看这个 我拿着真空罐 这个小手泵可以把容器里的空气都抽出来 所以我要把它打开 放入几块棉花糖 实际上我要放四块棉花糖 这样能看的更清楚 然后我要上手泵把所有的空气都抽出来 [机器声] 快看!你能看到它们变大了多少 真是太棒了 让我们多抽一些空气吧 [机器声] 看看这个 一个巨大的棉花糖 这真是太棒了 哈!现在我们要做的就是放入空气 看看会发生什么 [放气声] 太棒了!不是吗 看这些棉花糖 它们又变小了 再来一次 我们再看一遍 我要放入空气了 所有的空气 砰!快看! 这太棒了! 所以 让我知道你的想法 你喜欢这次的真空实验吗? 喜欢请点个赞
  • 2021-08-24慢动作下的跆拳道– Hello. I’m Gav. – I’m chilly.-大家好 我是Gav -我是Chilly You look chilly. Welcome to”Planet Slo Mo.”你看起来就很冷 欢迎收看《缓动先生》 Today we’re in a very chilly Seoul, South Korea.今天我们来到了非常寒冷的韩国首尔 I feel like in the past, Dan,Dan 我觉得在过去 we’ve filmed a lot of very impressive animals我们节目拍摄了很多令人印象深刻的动物 doing very impressive things in slo-mo.做了很多难忘的事 You know what else is impressive, though?你知道还有什么令人印象深刻的吗? – Go on. – Humans.-继续说 -人类 – I mean, not us, though.我…… 但不是指我们 -Specifically not us. -Humans that aren’t us.-绝对不是我们俩 -是其他人 – Yeah. – That’s correct.-对 -没错 We’re here to film the Kukkiwon Taekwondo Demonstration Team.我们来这里拍摄韩国国技院跆拳道示范队 Taekwondo — invented in Korea, so by now they’re pretty good at it.因为跆拳道发明于韩国 所以现在他们非常擅长 They’ve had enough time to get expert on it.他们有足够的时间来变成专家 Yeah, I think so.是的 我想是的 I’ve seen the clips of this demonstration team on YouTube, and it is nuts.我在YouTube上看过这个表演团队的片段 相当精彩 The amount of height they can get ? I can’t wait to see it.他们能达到怎样的水准?我已经迫不及待地想看看了 I think we should go and get into the arena,我想我们应该现在就进入训练馆 set up the Phantom, film some crazy stuff.准备好相机 去拍摄一些令人惊叹的东西 – I’m up for it. – All right.-我准备好了 -好 我们走 《缓动先生》 韩国 首尔 国技院 跆拳道示范队 So here we are in the taekwondo arena.我们现在到了跆拳道训练馆 There’s some audience seating and stuff.这里虽然有观众席和一些必备的东西 However, this lightis completely unsuitable for shooting high-speed.但是这种光是完全不适合高速拍摄的 It’s actually very dim on the Phantom camera实际上 用高速相机看这里非常暗 and it flickers like crazy.并且抖动非常明显 So we went a little bit mental with the lights,所以 我们被灯光搞得有点发疯 and we’ve got a bunch of 18Ks.我们用了一堆18Ks的灯 We’ve got all these Dinos at the back that should look really cool.后面的这些Dinos灯应该会挺酷的 So why don’t we bring up the lights?我们为何不打开这些灯呢? This is a grand total — it’s going to be a grand total of总计是……这里总共有 over 145,000 watts of light.超过145000瓦的灯 so like back in the day, when you used to have the incandescent bulbs,在过去 当你使用白炽灯时 you’d be like,”Oof. Got a 40-watter there.”你应该会惊叹 “喔 有40瓦” – Ooh, yeah. -“Ooh, a 100-watt bulb? Are you kidding?”-噢 是的 -噢 一个100瓦的灯泡?你在逗我吗? – One of these is 18,000 watts. – I can already feel the heat.-其中有一个是18000瓦 -我已经感受到了灯泡的热量 It takes awhile to get up to strength.聚集能量需要一段时间 I think we’re on–well on the way.我想我们……差不多可以了 Probably get maybe a 2-8,1,000 frames a second?大概每秒可以拍摄200 800 1000桢? – Yeah. – It should be lovely.-对 -那样就太好了 Okay, I think we’re ready to bring out the team film some kicking and flying through the air and that.我想我们已经准备好叫上团队 来拍摄一些踢腿和腾空之类的动作 – Can’t wait. – All right. Let’s do it.-我等不及了 -好 那我们开始吧 so we’re at 1,000 frames a second. We can only recordfor five seconds,我们每秒拍摄1000帧 只能记录5秒 so I think we’ll get the tail end of it所以我想我们会拍到全部动作 and this move is going to be just a bunch of roundhouses.而这套动作将会是一系列的回旋踢 – Okay. – It should be good.-好 -效果应该很棒 – Sounds good. – All right, let’s do it.-听起来不错 -好 开始拍摄吧 – Whoa. – ( shouting )-哇 -[喊] I mean, they just destroyed the equivalent我想 他们刚刚是用脚踢断了 of what’s probably a kitchen table with their feet和厨房里的桌子一样材质的木板 in about five seconds there.而且只花了大约五秒钟 – That was kind of scary. – Look at this. Dan:-有点吓人 -看这个 Flip.旋转 It’s, like, heel– like, ball.他的脚后跟像一只足球一样 You see the powder from the wood just get smashed?你看到木头断裂时飞撒出来的粉末了吗? Just sailing off into the distance.飞出去好远 Absolutely annihilated that piece of wood with his heel.用他的脚后跟将木板彻底摧毁 There’s just splinters everywhere.到处都是碎片 That would really hurt.那真的会很痛 -I feel like that would bloody hurt. -Just smashing…-我感觉那一定非常痛 -直接击碎…… Then it hits his hand.碎木板砸到了他的手 He actually kicked the one from before.他实际上踢中的是之前那块木板 -It was still the air from the previous kick. That’s how quick it is. 之前踢的木板还在空中 可见他们踢得有多快 that looks nice when the wood bursts当木板破裂的时候 木屑飞扬 with the backlight, that sawdust.衬着背景光 效果很不错 I wonder how many trees they’ve gone through?我想知道他们消耗了多少颗树? And then big old final kick.然后是最后的一次踢击 You got to remember, they’ve just kicked, like, six pieces of wood,你要记住 他们已经踢了六片木板 and then that one’s higher than the other guy’s head.而且这片木板举得比另一个人的头还高 A double spin. Gav:双重旋转 Look at the levels of adjustment there.喔!快看木板高度被调整了 -Bloody epic. -That is impressive.-血淋淋的运动 -太惊人了 Have you ever jumped and kicked three things before landing?你曾跳起来并在着地之前踢到三个东西吗? uh…no, I’ve mostly kicked one thing,i think没有 我想我最多踢到过一件 but never three.从没踢过三件 – We’re about to learn how it’s done. – All right.-我们将要看看如何做到 -好 I love the look to camera there, as well, afterwards. That was great.我喜欢从这里看相机画面 这很棒 I feel like you would do that, and you’d hurt the foot.我想你也可以做到 但你会伤到脚 Man, that’s so close to his face.伙计 那离他的脸太近了 Look at curled and straight her feet are as she’s in the air here. Gav:看看她自如伸曲的脚 就好像她站在空气上一样 It looks like, you know when you see in films that people are on wires just sailing through这看起来就像电影中吊着威亚的人正在穿行而过 the air kicking through — it looks like that.好像能够把空气踢穿一样 Just walking through the air. It’s like someone’s swimming.她在空中行走 就像游泳一样 It is.It’s like there’s a set of stairs there.是啊 好像那里架设了梯子 Making use of each foot.双脚都使用上了 “I kicked with that leg. I’ll kick with this now.” Dan:“我踢了右腿 再踢左腿” Oh, one after the other. And the last one,she’s on her way down.噢 轮流替换 最后一踢时 她在下落途中 – Oh! – Bang.-噢! -砰! Look at that.Right in front of his face.快看那 就在他的面前 I wonder how many times they’ve been hit in the face with that thing.我想知道他们的脸已经 被脚踢到过多少次了 I think it’s time we move on to some aerial stuff.我想我们是时候去拍摄一些腾空的动作了 Wasn’t that aerial?She was in the air,kicked three boards.这不是腾空吗?她在空中已经踢中三块木板了 She was in the air, but she wasn’t in the air. Yeah?她在空中 但她又不在空中 懂? All right. Okay.好吧 是的 -I’m talking humans taking flight. -I’m intrigued.-我意思是人在飞 -我很好奇 – Yeah. All right. – ( shouting )-嗯 好吧 -[喊] Look at the braced positions.看看这支撑的姿势 Whoa!哇! Got some air.我简直要窒息了 Wood went, like,40 feet in the air there. It’s an absolute hazard.这木板崩起来的高度像有40英尺 这相当的危险 They got showered in wood.他们洗了个木屑澡 Yeah,look. You see the spring-loaded procedure here.对 看他们从起跳到落地的过程 There’s two people being springboards.那两个人像跳板 He’s being supported by the guy behind.他借助后面这个伙计的支撑 I think the second guy is just to support the bar.我觉得第二个人是负责稳定跳板 Whereas the front person is doing a power squat而前面的人则通过蹲起向上用力 – to shove them into the air. – Gav: Yeah.-将他们推向空中 -是的 What an amazing sight.这场景太令人惊叹了 -Got some serious air there. -Oh!-快看这绝妙的空中动作 -噢! – That is madness. – What?-太疯狂了! -天呐 It looks like they’re in zero G right now. They could be in space.他们现在看起来像失重了一样 他们像是在太空 This guy here looks like an astronaut这个人看着像宇航员 just in the space station, just chilling out.在空间站里 很放松 Look at that.快看那 Look at all the powder and看那爆发出来的力量 the sawdust coming out from the wood there.木板都爆出了木屑 That is so impressive.这太让人印象深刻了 That’s like someone’s house exploded and the roof blew off.就像某人的屋子爆炸并且屋顶被掀开了 Just raining pieces and people and wood.人和木板就像雨点一样落下来 – That’s wicked. – Okay, so this one,-太强了 -好吧 那这个呢 – four paddles. – Yeah?-四个飞踢 -嗯 Three on the way up, and for good measure, one on the way down.三个在上升途中踢 完美走位后 落地过程再踢一个 Well, that’s just greedy,for a start.开始的时候有点过于贪心了 He’s going to get three in mid-air,他将在半空中踢爆三个木板 and then get one on the way down?在下降过程中踢最后一个? Three up, and then at the apex, he’s like,”I need one more.”踢中三个 然后达到顶点 他想“我想再来一个” Just one day he was like,”I can get four here. 直到有一天 他想到“我能在那里踢第四块 I can do that.”我能做到” All right. Looks like they’re ready.好的 他们看起来准备好了 – Whoa! – ( shouts )-喔! -[喊] Flippin-Ah’.快速旋转 啊 – God. – GoPro’s still in one piece.-天哪 -运动摄像机只能抓拍到一片木板 Four pieces of wood separated by about 12 feet,四片木板在12英尺高被踢裂了 just smashed in about less than a second.只有不到一秒 木板就被强力击破了 So he bashes it with his hand.他踏上他的手 Bang. Gav:砰 That one gets the left foot.那块板被他左脚踢中 – Two. – That one gets the right-两块 -那块板被右脚踢中 Oh! That one’s annihilated.噢 那块木板被粉碎了 He’s in mid-air doing a weird half-flip twist.他在半空诡异地旋转半圈 And then he’s like,”All right, I got to hit this now.” Oh,然后他可能想“好吧 我得现在就踢中它” he’s hit the metal there as well.他也击中了金属 That’s got to have been slightly painful.这好像有点疼 That is savage.太凶残了 I like how he absolutely started out like,我猜他一定是这么想的 “Ow. But I’m not going to show any pain here.”“哎呦!但是我不能让别人发现我很痛” All right, this one, Dan,好吧 看这个 Dan it’s a backflip with all the kicks in the world.这是一个融合了世界上所有踢法的后空翻 He’s going to kick all the way around.他要开始踢四周的木板了 That’s 1, 2, 3,4, 5, 6, 7, 8.这次有12345678片 Last time it was four,and I thought that was greedy.上一次就是四片木板 我居然还觉得太多了 – Now this is eight. – ( shouting )-现在是八片了 -[喊声] yeah he’s got this.他一定做得到 He’ll run up.他要向上跑 Oh, yes! 噢 太牛了! – That was awesome. – Did you hear it?-这太棒了 -你听见了吗? He nailed it.It was so satisfying.他成功做到了 这太让人满足了 – It was over in a second. -dadadad Done.-他用一秒钟就完成了 -嗒嗒嗒嗒 完成了 – Sounded like a machine gun. – That was awesome. Gav:-听起来像机器子弹 -太精彩了 Look at this. One.看这里 一块 -He’s putting power into these kicks as well to break the board. -Two.-他将力量集中到踢腿上 击碎木板 -两块 I can imagine that would be hard if you actually had a solid surface.我能够想象到 就算有稳固的平面支撑也难做到 But these are giving him nothing. He’s just kicking them.但他什么都没有 直接悬空踢 You see how his foot stops just before that board你看他的脚是怎样停在那块木板前 in order to get the maximum amount of power and rotation into the kick?是为了得到最大程度的力量和旋转来踢腿吗? Kicked the last one.踢到了最后一个 And he’s got one more to get.还有一块 And he bloody got it as well.他成功了 Going to try a very close, very wide,我将去尝试一个很近的 很广角的 – and very handheld shot. – Very scary shot.-手持型的拍摄 -这样拍摄太可怕了 yup,I’m going to jam in here and I’m going to我将挤在这里 并且 to go track it all the way around and see if I can get it.自始至终去追着他拍摄 看是否我能够成功 It’s ambitious. It’s ambitious.-这太艰巨了 -太艰难了 I feel kind of intimidated being this close to it, as well.离他们这么近我也有点害怕 Yeah,might get hit in the head with a board.没错 可能会被一块木板击中头部 – Dan: Yeah. – We’ll see.-对 -我们拭目以待 All right,I think we’re good.好了 一切准备就绪 I nearly took one to the face there.我的脸差点被打到了 God.天哪 – Looks promising. – Promising, indeed.-看起来拍的不错 -确实有希望 – Dan: Goodness me. – That is a mad shot. Dan:-我的天哪 -拍得非常精彩 You got the flags in the background.你可以得到一个胜利旗帜了 It’s clearly someone upside-down at least ten feet in the air这个人很明显在空中上下颠倒了至少有10英寸 kicking things eight times in less than a second.踢了八下 用时不到一秒 Look at that flair at the end.看看那耀眼的最后一踢 Just for extra good measure.只是为了能更精确的测量 That’s what you call an action shot.那便是你所说的动作镜头 – That was cool. – It’s awesome.-简直太棒了 -太赞了 For a finale, we asked them,最后 我们问他们 “How high can you send someone?”“你们能把人送到多高的地方?” And they’ve come up with this sort of multi-stage launch system.然后他们就琢磨出了这种多阶发射的方式 This should be bloody impressive.这应该会非常令人印象深刻 – ( shouting ) – Multi-stage launch. Ready.-[喊] -多级发射 准备 Whoa!喔! And the landing he nailed, as well.他又成功着陆了 That was insane.That was so good.太疯狂了 太棒了 That was–that was so ridiculous.这……太不可思议了 When you think about–that’s just launched from his legs off various items there.你还没回过神 他就通过腿部的各种力量发射出去了 I wonder what he squats,我想知道他蹲在哪里 because that is some serious power in his legs there.因为他的腿上有一股强大的力量 Uh,mate, what are you squatting?”“伙计 你蹲在哪里?” I think he got more of a powerful kick there than I’ve seen today.这是我在今天看到的最有力的一击 And the piece of wood almost hit the flags on the roof. Dan:那块木板几乎要击中屋顶上的旗子了 -Look how far he’s falling. -Look at how far he’s going there.-看他下落的距离有多么高啊 -看他距离地面那么远 It seems to be on the chest, onto the arms.看起来他是先跳到胸部高度 踏上胳膊 – This is the main launch. – Double push.-这是最主要的助推力 -双倍推力 And then he seems to use both feet on the next在接下来 他似乎要使用双脚 No,it’s just one foot.It’s just one foot on each.不 只用了一只脚 每只脚踩一次 It’s like he’s going up what looks to be就像他在往上走 two flights of stairs in two steps.只用了两步就到了两层楼的高度 He gets some serious power into this kick as well.他获得了一些踢腿的神秘力量 – He kickedthat to the moon. – Shatters it.-他踢向月亮 -踢碎木板 He is at probably roof height on an English house.他这高度大概有英国房子的屋顶那么高 -He’d be knocking out the satellite dish at this point. -Yeah.-他会踢到卫星天线上去 -对 okey, look how far he’s falling here.看看他落下的高度 That is absolutely insane.那简直太疯狂了 Lovely stuff. 一群可爱的家伙 That’s it.干得漂亮 I feel like we’ve got some really good footage there,我们在这里得到了很多优秀的镜头 -but I’ve never felt so worthless in all my life. – So inadequate.-让我觉得自己活得太没价值了 -信心不足了 just incapable of what humans can do.对 很难想象竟然有人可以做到这么难的事情 How long do you think it would take you to get to this point?你觉得需要多长时间才能做到他们这样? Do you think if you trained for 10,000 hours, you could do that?如果你训练10000个小时 你觉得能做到吗? No, 10,000 hours wouldn’t get me close to this.10000个小时对我来说 还是有点少 Oh, I can do it.但我能做到 To think that earlier there was a bloke一想到之前有个家伙 just way up above where we stood now.就在我们现在站的地方 They were moving so fast and covering so much distance through the air在空中移动得那么快 走了那么多距离 that I was actually struggling with the refresh rate on the monitor.以至于我只能盯着屏幕上的镜头 It wasn’t keeping up with them,我的眼睛根本跟不上他们的速度 because I was so tight on some of them. Madness.因为视线只能集中在几个人身上 太疯狂了 Well, hopefully you loved that footage as much as we did.希望你也和我们一样喜欢这些镜头 Feel free to subscribe to the Slow Mo Guys,尽情订阅《缓动先生》吧 check out other episodes of”Planet Slow Mo,”来看我们的其他视频 and tune in for part two where Dan will have a go.请继续收看第二部分 看丹将要去哪里拍摄吧 Yeah, I’ve got this.我已经准备好了 There’s definitely going to be a training montage.这确实是个练习蒙太奇剪辑的好方法
  • 2021-08-24慢镜头下的武士刀切箭过程Hello, the Internet.各位网友 大家好 – I’m Gav. – I’m Dan.– 我是Gav – 我是Dan We are The Slow Mo Guys.我们是“缓动先生” One of my favorite channels, very high production value, Corridor Digital…《走廊视觉》是我很喜欢的一个的频道 制作水准很高 – I like it. – It’s a good channel.– 我也喜欢 – 是很不错 Even the second channel is good. 他们的另一个频道也很棒 So what I’m gonna do is just nick one of their ideas.所以 接下来我要做的 只是“借鉴”一下他们的想法 – At least you’re being upfront. – Yeah, I saw them try and slice an arrow in half with a katana.– 你还挺坦诚 – 对 我看到过他们尝试用武士刀把一支箭切成两半 And it looked pretty cool, like a sort of medium slo-mo.看起来非常酷 有点像中速的慢动作 – Yeah. – So I figured why don’t we just super slow-mo. – Yeah.– 是的 – 我就想 我们为什么不弄个超级慢动作呢? – 挺好的 I’m gonna have to be firing the arrow. You’re gonna have to do the chopping.等下我来射箭 你来切箭 – Yeah, how do you fill that? – I’ll just preset the Phantom.– 可以 你怎么装的这个? – 我会预设好高速摄像机 I don’t know. I feel I could do archery at beavers or something.我不知道 我觉得我能射中海狸或者别的东西 – Beavers? Oh, you’re gonna fire it off now. – Yes.– 海狸?哦 你现在要射箭了吗 – 对 All right. Okay.好的 行吧 Oh god, I’ve already… All right.天啊 我已经……行吧 Oh, that is gone.哇 箭已经飞出去了 That goes at some clip that.飞得有点快啊 – I’m so I still have lost my confidence in you being able to do it now. – Oh really?– 我开始担心你是否能做到了 – 哦 真的吗? Yes, well, I don’t really have any control other than I guess to do some micro pulls.对 我甚至没怎么控制它 就轻轻一拉 But really, once it’s locked in, that’s like a set speed, isn’t it?但讲真 一固定 它就像有一个设定速度一样 Yeah, you have to aim that nicely so I can actually hit it because这样啊 你得瞄准点 我好切中它 otherwise, I’m gonna be just going collecting arrows.不然的话 我就要捡很多次箭 How many attempts do you think it will take you你觉得你大概需要多少次 to sever it right in the middle of the arrow?才能切到箭的正中间? – A clean… clean cut? – Yeah. – I reckon like thirty times.– 干净利落地切断吗? – 是的 – 大概30次吧 – How many arrows do we have? – We’ve got six. We’ve got six.– 我们有多少支箭来着? – 六支 一共六支 Yeah, I did’t really think about it how much.是的 我记不起来到底有多少支了 – Just get one. – Yeah, one hour.– 就一个小时 – 好的 一个小时 Right, you know if I miss it, it won’t break.好的 如果我没切中 它是不会断的 – All right. Let’s set the Phantom. – All right.– 是的 那我们设置一下高速摄像机 – 好的 – And start what could be a very long process of trying to get this shot. – Right.– 然后就开始切箭 感觉要很久才能切中 – 对的 Okay, so we’re gonna do a few things because there’s no one on the Phantom.好的 因为高速摄像机那里没有人 我们得先做几件事 I’m gonna have the trigger on a wire in my pocket.我把触发器连上线 放在我口袋里 And just so Dan doesn’t get skewered through the guts,为了防止Dan被箭刺穿肠子 these are sort of rubber tipped training arrows, that这些实验用的箭已经用橡胶保护好了 would probably hurt but not go in to Dan.这可能会伤到Dan但不会把他刺穿 – All right. Dan, goggles on gloves on. – Yeah.– 好了 Dan 快戴上护目镜和手套 – 好的 – Then you can hit the target? – I don’t know about that.– 你能击中靶子吗? – 我也不知道 Okay, let’s see.好 让我们拭目以待 Flippin’ heck.天啊好可怕 That really goes in and all. Don’t hit me with that thing.竟然真的射进靶子了 你可千万别射到我 – I’ll try not to. – Okay.– 我尽力 – 那就好 All right. If you get on the first attempt to save us all a lot of time.好了 如果你一次就能切到 我们能省好多时间 – Yeah. – I’m off screen because– 是的 – 我得离屏幕远一点 I need to be far enough away that Dan can see.我要离Dan远点 他才能看见我 Alright. I’m gonna count you down there.我在那边给你倒计时 Whoo, this is gonna be hard work, I could tell already.呼 我已经开始觉得这事很难了 Three, two, one, fire.三 二 一 射击 I got it. I got it. Trigger.我切中了 我做到了 看下触发器 – I got it. – What? – I nailed it.– 我做到了 – 什么? – 我切到箭了 – I got the front. – You got the front. – I got the front.– 我切到了箭的前端 – 你真的切到了?! – 我切到了 – What, I got it. – Wait. – I got it.– 哇 我做到了 – 等等 – 我做到了 – Wait. – I got it clean.– 不是吧 – 我一下就切到了 – Wait. – I got it cleanly.– 等下 – 我切得很利落 What? What.怎么了 有什么问题吗? – Did we get it? – Alright, packed it up.– 拍到了吗? – 拍到了 我们可以收工了 So I bought six, we needed one.我买了六支箭 结果就只要一支 Excellent. There we go.优秀 这就是我们想要的结果 – That was my test one. – That was your test one.– 那支是我测试用的箭 – 那是你测试用的箭 – And then you got it on the next one. – Yeah.– 然后第二支你就切中了 – 对 I was like, got my eye in, and we’re done.就感觉 集中一下注意力 然后就结束了 I thought it to be a longer video我以为要花更长时间 cause it took Corridor guys a few goes.看别人做花了好长时间 We got here so early for this. We have like hours left.我们来的好早 现在还有很多时间 We can try this again with a close-up.我们可以用近摄镜头再试一次 Yeah, all right.嗯 也行 – That’s delicious. – Jesus.– 太棒了 – 天啊 Either I was gonna miss or要么是我没切中 you deflected the arrow away from the target.要么是你的箭偏离了靶子 So, I like slice… I think you weren’t missing.所以我喜欢切箭 我认为你不会射偏 – I think you… – Yeah. – You deflected the arrow.– 我觉得 – 对 – 你切偏了 It bounced up and then the flights kicked in again.那支箭弹了起来 之后又飞了起来 It’s stabilized and continued higher than the target.在靶子上面飞得很稳 We could have used real arrows with somebody stood there.我们应该用真箭 然后找个人站在那里 Well, I think the tip would have still hit them.嗯 我觉得他们还是会被箭打到 And it… like the tip span and like went in backwards.箭头飞了一段时间 切中后是箭的末端在飞 To be fair, you did make a nice clean sever说实话 你下刀很干脆 that would have really hurt still.被切到应该会很痛 Oh yeah, well, that’s true.是的 那倒是 You’re like the guy behind me who I’m like protecting.你站在我后面 像是我在保护的人一样 So you’d be like… I’ll be coming like this. 然后我被箭射中 像这样 You would be stood there with the tip of the arrow.你就站在那里 身上插着箭头 – I will be like, “You know what? I appreciate it. Look at that!” – People be like…– 这时候我就会说 “真的太感谢你了!” – 然后大家…… People be like how did that happen? Like, what happened?大家就会一脸茫然 怎么了?发生了什么? – I can’t believe that. – Thanks.– 我简直不敢相信 – 谢谢 That’s pretty good of it. I heard that.谢谢你的称赞 That was wicked.太厉害了 – So the tip landed here, right? – That’s how I know I got it properly– 这是掉落的箭头 – 对 我知道我切中了 because I, I sliced, felt a very small amount of resistance and I looked around,因为我切的时候感觉有点阻力 然后我环顾四周 – and I saw the tip. – Wow, what a clean slice, isn’t it?– 然后就看到了箭头 – 哇哦 多么干净的刀法 So this is where it hit and then bounced off onto the floor.这就是箭头击中的点 然后它反弹掉在了地上 This part isn’t quite so clean and there’s a small shard of it that come off the back there.这一部分不是很整齐 有一小块碎片从后面掉下来了 That part is…那块小碎片 marries up with the front. And there’s like a small bit of like wood that’s come off the side.和箭头的前半部分连在一起 边上好像也掉了一小块木片 I’d also hit the ground a lot, you know with a lot more force could it’s still sailing away.我还切到地面了 阻力很大 但还是切下去了 Oh, that’s probably the chipping here. But this second part I’m sure that came off…哦 应该就是切到了这里 旁边肯定掉了一小块木片 in the slo-mo. We can see that little extra chip come off.我们可以通过慢镜头看到它掉落的样子 Okay. This time for a close-up.好了 这回试试近摄镜头 I’m gonna try to fire right past the Phantom, and I start to shoot it.我要试着把箭从摄像机旁边射过去 And then we’ll try and get a much closer shot of you doing the exact same thing, if you can.如果可以的话 你射两次箭吧 第二次试试更近的镜头 – I’ll try. – I imagine if it actually hits me, it’s got a bloody earth.– 我尽力 – 那支箭如果射到我 地上会有很多血的 Yeah, I bet it would.是的 那肯定 Be a nice Bruce.但我会好好射击的 – Just trust you are here. – Yeah.– 我相信你 – 好的 – Are you ready? – Yeah.– 准备好了吗? – 准备好了 Three, two, one, fire.三 二 一 射击 Got it.我切到了 – I got the back of it. – You got it?– 我切中了箭的后半部分 – 你切中了? I got the back of it.对 切到了后面 You know what? I have actually slightly worried at how close to the lens I put that.你知道吗?我有点担心这支箭和镜头的距离 I must have missed that by a few inches.有几英寸应该没拍到 Eyes on the arrow, eyes on the prize.盯着这支箭 成功就在眼前 – I see that when you… – The guy still got it to the gut.– 我看到了 – 我还是在肚子的位置切到箭了 At least didn’t get to the shoulder.至少不是在肩膀的位置切到 Yeah, that was actually really nice positioning of the weather here.对 箭羽真的是很好的切箭位置 Because all the feathers are coming off and float.因为所有的羽毛都掉了 漂在空中 Oh yeah, it’s like loads of actual feathers just like splinter everywhere.对啊 就像到处都是碎羽毛一样 What you need is…你需要做的就是 directly in the middle and hopefully just like in Armageddon, they’ll miss the target.直接把箭切成两半 然后就像世界末日一样 这两半都没击中靶子 – Oh, yeah. – Just like that asteroid missed the earth. – 哦 我懂了 – 就像小行星错过地球一样 We’ve got two hours left. I think you’re asking a bit much.我们就剩两个小时了 我觉得你的要求得太多了 All right, the weather’s taking a turn, we’re losing light.好吧 开始变天了 光线有点不足了 We might get rained on in a bit, but一会儿可能要下雨 before that happens, let’s try and get one more same angle.但在下雨之前 让我们试着再找一个相同的角度 I like that angle. 我喜欢那个角度 Okay, just try and get a more central hit.好的 试着切到箭的正中间 And I know it’s asking a lot. 我知道这样要求有点高 – All right. I’ll try. – Three, two, one, fire.– 好的 我试试 – 三 二 一 射击 Got it.切中了 Got this, got the end again.切中了 还是切到了后面 Damn it.该死 How much time do you think distance-wise there is between there and there?你觉得从那里到那里需要多长时间? – Time? – Time.– 时间? – 对 时间 Point zero zero… Something of a second.零点零点几秒 So it seems like miles out, but I’m point bugger all. 所以这看起来像有几英里远 但实际上转瞬而已 Yeah, I would say that…对 我想说的是 I would say the difference between here and here我想说的是 这里到这里的距离 could be measured in milliseconds.可以用毫秒来衡量 Probably, it’s going pretty fast.很有可能 它飞的太快了 – We could probably calculate how quickly fast. – Yeah.– 我们可以计算一下有多快 – 是的 How quick that is.算一下有多快 – We can calculate it on the white. – Yeah.– 我们可以计算白色的部分 – 没错 Three, two, one, fire!三二一 射击 Got it at the back again. Damn it.该死 我又切到了后面 That was a really nasty cut.真的是很难切 – Was it? – Yeah.– 是吗? – 嗯 I sliced it really finely there.我刚才切得挺不错 – How was it? – It is pretty nasty split but I think you save the blog. – 怎么样? – 是很难切 不过我觉得你成功了 Well, you made it so that each end of the arrow sort of hit in flat.你做到了 箭的切口很平整 – Ah. – And the top of it deviate away.– 这样子 – 而且箭的前半部分没碰到靶子 Well, we ran out of arrows quite quickly,我们很快就用光了所有的箭 because you were so damn good at getting them.因为你切得特别特别准 – I need… I got them from the beginning and sort of a middle. – Oh. Yeah.– 一开始我就切到了比较中间的位置 – 噢 是的 And the end…最后 I’d like to think that you could…我觉得 I’d like to think that you could stand behind me on a battle field and be all right.我觉得在战场上 你要是站在我身后 就可以安然无恙了 – Yeah, I would stand behind you. – Yeah.– 嗯 我会站在你身后的 – 嗯 Yeah, I’d probably take it instead of here,对 那样箭就射不到我的心脏 – I‘d like take it like here and here. – Yeah.– 但会射到我的头 – 哈哈是的 It was interesting that, you know, the further forward you hit on the arrow,有趣的是 你切中箭的位置越往前 it would always deviate the arrow.箭的后半部分的轨迹更容易偏离 But if there was enough of the arrow left,但是如果后半部分的箭足够长 the feathers could still cause the rifling, to the point where it would just stabilize again就可以继续往前飞 直到再次稳定 – on a different… on a different path. – Because…– 虽然飞行的轨迹不同 – 因为 Also because of the weight of the arrows, is that the front.由于箭的重量主要在前半部分 The… The further forward the the slice was, the cleaner the cut.越是切在箭的前面部分 切口就越干净 Because obviously the weight is behind the cut.因为很明显 箭的重量在切口后面 Whereas, it’s less weight behind the cut, and it’s sort of easily movable.反之 切口后面的重量越轻 它就更容易移动 – So it’s gonna be much less. – There are much more splintery, – Yeah.– 所以切口会比较不平整 – 碎片也更多 – 是的 and long cuts to the back.切口也会更长 Yeah, if you see the comparison there between the front and the back.对 两种切口一对比就很明显了 So we pretty much can’t film anymore, because:所以基本上我们只能拍到这里了 A, we’re out of arrows; and B is我们准备的箭已经用完了 a big old storm rolling. That’s about to blow all of our equipment away. 而且会有一场暴风雨 可能会吹走我们所有的设备 Well, that’s not the only reason.呃 那不是唯一的原因 There is a sea. There’s a reason, sea. That’s why we’re stopping filming. And…还有一个原因是 我们在海边 I sort of… sort of shot the monitor.还有就是 我稍微 射到了显示器 You destroyed the mana for this slo-mo camera.你破坏了这架高速摄像机的神力 So we can’t actually shoot anymore.所以 我们再也拍不了视频了 That’s the big reason why we can’t shoot.那才是最重要的一个原因 It’s because we’ve set, we’ve got a full video其实是因为拍好了 on the Monitor Carnage over on the second channel.我们用通道二拍下了“显示器事件”的完整视频 So make sure you check that out如果你对昂贵又实用的事物被毁掉的过程感兴趣 if you like seeing things that are expensive and useful destroyed.记得来看我们的视频 We just don’t usually break equipment on this channel, surprisingly.我们做这个频道竟然很少破坏设备 太让人意外了 – Surprisingly. It’s very well. – That’s the first loss of equipment– 是很意外 但很好 – 这是自从经典的“佳能户外运动摄像机事件”以来 since the classic GoPro Canon incident.我们第一次毁掉设备 Wait, that means we’re even. You won all.等下 那意味着我们扯平了 你赢了 – But mine was a GoPro. – Yeah. – And yours was that.– 但我弄坏的是一个摄像机 – 是的 – 你弄坏的是显示器 – Mine was a several thousand dollar small HD monitor. – Yeah.– 我毁掉的是一台价值几千美元的小型高清显示器 – 是的 All right. Make sure you go and好的 请大家一定要 check out the video over there. Because…观看这一期的视频 – We need to buy a new monitor. – Yeah.– 因为我们需要买一个新的显示器 – 是的 – Subscribe and watch the video. – Well, tell 9 friends.– 订阅并观看视频 – 对 告诉你的九个朋友 – Yeah. – We need to fund a new monitor.– 是的 – 我们得集资买一台新的显示器 Guys, they’ve broken some equipment. 朋友们 他们已经弄坏了一些设备了 Alright, Thank you very much for watching. We’ll see you in the next video.好了 感谢大家的观看 我们下个视频再见 Love and kisses.爱你们 么么 I think I was born in the wrong time.我觉得我生不逢时 You’d have been an excellent Japanese man from the past.你上辈子一定是个很出色的日本男人
  • 2021-08-24用多少酒精棉片才能擦掉手机屏幕上的涂层?[dramatic music][戏剧性音乐] [buffer buzzing loudly][抛光器嘈杂音] How can this coating still be on here?涂层怎么还在上面? Okay, some back story on好的 我来告诉你 why I did this to a brand new iPhone 8.为什么我对崭新的iphone 8这样做 You may have heard of this thing called.你最近可能听说过 – The coronavirus.-新型冠状病毒 – Coronavirus.-新型冠状病毒 – The coronavirus outbreak.-新型冠状病毒爆发 – And that everyone wants to clean off everything with-每个人都想尽办法 well, just about anything to protect themselves.清洁所有物品来保护自己 You may have also heard你可能也听说过 that you should never, ever, ever use liquid cleaning supplies on your smartphone.永远不要用液体清洁用品清洗手机 That’s because your smartphone screen那是因为手机屏幕上 has a protective coating to repel both water and oil.有一层防水防油的保护涂层 You may have heard it marketed as the oleophobic coating.也就是你在市场上听说的“疏油涂层” Basically, it minimizes fingerprints and smudges.基本上 它能最大限度地减少屏幕指纹和污迹 You can see the difference here.你可以看到这里的差别 The left side of this phone has the oleophobic coating,手机屏幕左侧有疏油涂层 the right side doesn’t.而右侧没有 Then I placed a drop of olive oil on each side.我再将一滴橄榄油分别滴在屏幕两侧 You can see that on the coating side,你可以看到有涂层的一侧 the oil droplet quickly repels,油滴快速滑落 on the side with no coating,而没有涂层那一侧 it sticks and has a harder time coming off the screen.油滴粘住了 并且更难从屏幕上滴落 The chemicals and abrasive materials in some cleaning products一些清洁产品中的化学物质和研磨性材料 can destroy that coating.会破坏涂层 In fact, after many years of saying, just use a microfiber cloth,这些年其实一直都说 用微纤维布清洁就行 Apple okayed the use of disinfecting wipes like Clorox and Lysol苹果手机支持Clorox和Lysol品牌的消毒湿巾 and wipes with 70% isopropyl alcohol,以及70%异丙醇的酒精棉片清洁擦拭 but how many wipes does it take to take off this coating但是需要擦多少下涂层才会脱落呢? and what does it look like when the coating’s all gone?如果它脱落了是什么样? I scrubbed a lot for science.为了科学 我进行了大量的擦拭 [playful upbeat music][激昂的音乐] Now we’re talking.现在 让我们开始吧 小试验 I wanted to preserve the oleophobic coating on one side of the screen我希望保留屏幕一侧的疏油涂层 so I covered that side with paper and tape所以我就用纸将这一侧盖住并用胶带粘牢 then I began scrubbing the other side with these Clorox disinfecting wipes.然后用Clorox消毒湿巾擦拭另一侧 I did 365 wipes.我擦了365次 I figured one scrub a day for a year.按照一年每天擦一次来算 This feels very wasteful.感觉好浪费啊 And one.1 Two.2 [clicker clicking][滴答声] 365!365! I did not let it dry for the recommended four minutes我没有按说明书上的推荐将它晾4分钟 because, well, I have a life.因为 我的生活还要继续 I really should’ve worn gloves.我真应该戴上手套 I’m super wrinkled,我的手特别皱 like I just took a bath in Clorox wipes.像是刚刚在Clorox湿巾里洗澡一样 The results?那结果呢? The coating was totally fine.涂层完全没受影响 So I decided to keep wiping for another two years.于是我决定再用两年的量 [clicker clicking][滴答声] Even after 1,095 wipes, the coating appeared intact.即便擦了1095次 涂层还是完好无损 The screen still felt smooth and repelled the oil and water.屏幕依然顺滑 防水防油 So I upped the challenge所以 挑战升级 using some explicitly banned cleaning supplies.用明确禁止使用的清洁用品 Is this on right?我戴对了吗? I was told that hydrochloric acid found in toilet bowl cleaner有人和我说马桶清洁剂中的盐酸 would destroy the coating.可以破坏涂层 After 10 minutes of scrubbing with it,用它擦拭10分钟后 it seemed totally fine.涂层看起来并没有损坏 A Magic Eraser, which has abrasives.用含有磨料的Magic Eraser清洁剂 Still pretty fine.涂层还是完好的 I’m doing a lot of squeaking.一直嘎吱嘎吱地响 Though I only did it for about two minutes.虽然只进行了2分钟 Car buffer?汽车抛光器? Nah, but it was fun.不 不过这会很好玩 [buffer humming][抛光器嗡嗡作响] Finally, I decided to go all out.最后 我决定放大招 After two hours in a tub of toilet bowl sauce,在一盆马桶清洁剂里泡了两小时后 the coating was finally starting to come off.涂层终于开始脱落了 I topped it off with some soft scrub with bleach and nail polish remover.最后我还用漂白剂和洗甲水轻轻擦洗了一下 We’ve heard acetone is bad for screens,据说丙酮会破坏屏幕 there’s acetone and nail polish remover.这是丙酮和洗甲水 Help me!助我成功吧! Finally, as you can see,终于 你可以看到 the oil on the right side of the screen where the coating had been stripped屏幕右侧的涂层脱落了 began to repel much slower than on the left.油滴下落的速度比左侧的慢了很多 But you don’t have to go to all these lengths to take off the coating.其实你不必费这么大的劲除去涂层 It turns out that after normal use事实证明 在正常使用后 the oleophobic coating on any phone will just start to wear.手机上的疏油涂层都会开始脱落 By the way, the phone worked and turned on perfectly fine顺便说一下 在试验后 at the end of all of this.手机启动和运行都没问题 So after all of this, what do you do?所以经过上述试验后 你会怎么做? If you’re just looking to clean your phone cosmetically,如果你只是为了美观而清洁屏幕 get a microfiber cloth用微纤维布就可以 but if you wanna disinfect and kill all the germs,如果想要消毒并杀死细菌 use a disinfecting wipe.那么就用消毒棉片擦拭 Heck, use 365 of them.哎 记住要擦365下 If you’re still worried如果你还不放心 and you don’t like getting your hands wet,而且不想把手弄湿 you could try a UV phone sanitizer,可以用手机紫外线消毒器 like this $100 PhoneSoap Go比如这款100美元的PhoneSoap Go that promises to kill 99% of bacteria and germs.承诺可以杀死99%的细菌和病菌 I did not test that claim myself.我没有对这点进行验证 I now resign as the 我辞职了 不再是 leading phone cleaning columnist at The Wall Street Journal.《华尔街时报》首席手机清洁专栏作家了 I’m never testing phone cleaning again.我再也不进行手机清洁试验了 Never.永远不
  • 2021-08-24如何用瑞士军刀破解密码锁这里是《开锁专家》 今天我为大家带来的是 一款生活中最常见的电子密码锁 我见过这种按键锁运用在许多不同的地方 包括门锁 锁重型机械 电动工具以及电梯锁 这些锁都是中国制造并由几十家公司冠名 为了演示说明我设置了一个电动挡板 无论是你在门里面按下出门按钮 或者从外面输入密码 它都会打开 当前的密码为1234 像这样很容易就解开了 但对于粗心的人来说就会有隐患 最重要的是背面的防篡改开关 它能检测出有人移动了挡板 绝大多数情况下 这个篡改开关不会连接任何地方 不过我会向你展示如何用回形针绕过开关 如果需要看清线路的话 就要通过这样的方式 然而 如果你熟悉这些线路是如何构成的 并很容易在网上找到结构图的话 你就会知道没有必要损坏开关 但这样做往往很难 如果想轻松解决问题 你只需要一把像我这样的钥匙链瑞士军刀 我来向你展示怎样做 首先我们需要拧松这两颗螺丝 这样我可以直观地看到里面的内容 并且找到合适的接触点 然后我要将接触点连接到盖板上 这样锁就开了 现在不用太过纠结我怎么操作的 我先卡住了出口按钮的接触点 然后我将它桥接到连接线路的盖板上 糊弄这把锁 假装里面有人按了出门按钮 如果不是典型的安装装置 你需要仔细地查看线路 并且可能需要损坏篡改开关 那么我们开始吧 我将回形针展开并留个小钩子在上面 然后稍微拧松一点螺丝 找到固定在防篡改开关的弹簧 好我现在勾住了弹簧 接着我们将回形针折过来 这样我就不用担心警报会响 然后拧掉这些螺丝 现在翻过来后我们可以看到 弹簧连接在防篡改开关上 通过把弹簧拉到一边来压住电器盒的背面 确保防篡改开关处于按压状态 这样警报就不会响 不过我把盖子拿出来 后面就不会有金属接触到开关 所以我也可以拿掉回形针 因为里面没有警报了 我们也可以看到里面是如何连接的 现在是普通的开启模式 我可以通过触碰接触点来打开挡板 我也可以触发出门按钮 同样也可以通过刚才 我使用瑞士军刀所操作的步骤 接触出门按钮接触点将其桥接到盖板上 如果你熟悉这些常见密码锁的破解方法 那么在任何情况下破解它都不算难事 这就是今天我为大家带来的内容 如果你有任何的问题或评论 请发到下面 如果你喜欢这支视频并想看更多内容 记得点关注 祝你今天愉快 谢谢!
  • 2021-08-24硫酸铜晶体的形成过程这段视频中我使用了1摩尔硫酸铜溶液 我在载玻片上滴加了几滴硫酸铜溶液 观察在水和铜色硫酸盐蒸发后结晶的过程 10倍下的显微镜 30倍下的显微镜 结晶时间 1分钟 结晶时间 1分40秒 结晶时间 1分50秒 结晶时间 2分20秒 结晶时间 2分40秒 结晶时间 4分钟 结晶时间 1分钟 结晶时间 8分钟 结晶时间 19分钟 40倍下的显微镜 请在脸书和ins上关注更多sci的事
  • 2021-08-24会变色的桌面这些桌子都是视错觉 颜色根据你站的位置而改变 除此之外 平展的桌面看起来却是立体的 Taj Monjardo和他的工作室团队 掌握了喷漆和在桌子里雕刻图案的技术 将其变成了颜色可变 更立体的家具 但是他们是如何做到的呢 Taj在15年前开始研究这个技术 然而现在仍然是种艰难的工艺 不能顺利按照计划进展下去 这是一个非常耗时 精细的工艺 容易受到其它因素影响 经常出错 这个工艺并不容易 亚克力的属性使其成为项目的首选材料 它易于雕刻 但也非常耐用 最重要的是 亚克力是透明的 对Taj所做的再理想不过了 Taj与他的团队合作 对每件家具进行独一无二的设计 团队最终在亚克力上进行图案创作和设计时 时刻想到喷漆后的变色效果 这点非常重要 因为凹凸面在不同方向上交替排列 光线从不同角度射入时 会产生让人恍惚的镜面效果 这一部分看起来是紫色的 相邻的部分看起来却是蓝色的 设计都在电脑上完成 然后输入到数控机床 再由机床精准在材料上雕刻图案 最后仔细清理亚克力板上的 尘土和机床切削下来的碎屑 这样 就得到了光滑的表面来上漆 这个工序完成后 其余的工作是在刻有图案的桌子背面完成 通常喷漆前 要先上底漆 但是Taj和他的团队 发现将这两道工序颠倒后 桌子呈现出棱柱一样的效果 喷漆工艺首先上分色漆 这种漆产生分色效果 分色漆自身而言 看起来没什么特别的 它是一种简单的白色物质 这就是要加入黑色底漆的缘由 因为分色漆几乎是透明的 若没有其它颜色作对比 颜色显现不出来 喷漆再上底漆后 把桌子翻过来 撕掉桌子正面的保护膜 剥掉保护膜后 就大功告成了 Taj和他的团队 使用同种技术创造了各式各样的种装饰品 因此不论是什么项目 变色效果都能给家中带来些许颜色和魔法
  • 2021-08-24无限反射的镜面艺术这些工艺品能无限反射 它们是由洛杉矶艺术家安东尼·詹姆斯创作 这一系列作品 称作“二十面体门” 创造了无限空间的幻觉 它们是由20个相同的三角形组成的几何球体 詹姆斯用钢铁 玻璃 和LED灯制作了它们 他从2011年开始创作这个系列 它将在水晶桥博物馆展出到2020年1月
  • 2021-08-24用微波炉加热鸵鸟蛋会发生什么?大家好 现在我要把一个鸵鸟蛋放到微波炉里 来看看它爆炸时有多么剧烈 这个蛋在外面放了很久 已经不能吃了 其他人就把它扔了 但我想到它有更好的用途 把鸡蛋放到微波炉里 微波炉可以通过鸡蛋壳对其内部加热 达到高于沸点的温度 这意味着将其内部物质变成气体 当气体升温就会膨胀 所以基本上说 你可以把鸡蛋放到微波炉里让它爆炸 这会造成极大混乱 所以不要那么做 其实这样加热鸡蛋挺危险的 因为鸡蛋壳提供了极大的力量 使得内部压力在爆炸前就很大了 有时会延迟 我听说有人把鸡蛋放在微波炉里 从微波炉里拿出来 然后鸡蛋就爆炸了 所以我想知道 把鸵鸟蛋放进微波炉会怎样 那么我们就来一探究竟 这其实是一个美洲鸵鸟蛋 美洲鸵鸟长得很像鸸鹋 所以这颗蛋挺大 但还没有非洲鸵鸟那么大 在我们开始之前 先来看看普通鸡蛋会发生什么 好 让鸡蛋在微波炉里爆炸 三二一 这就是爆炸之后乱糟糟的样子 看 鸡蛋碎了 我得清理一下 劲儿挺大 录视频前我没想到真的会这样 现在我们看到鸡蛋爆炸时只有蛋黄爆出 一旦蛋黄爆了出来 一旦它撞到玻璃板上它就会自己炸开 我猜这是因为它提供了一个场地 鸡蛋在这里沸腾晃动然后爆炸 我们来看一下 什么都没发生 还是什么都没发生 还得等一会儿 看 看 它爆炸了 鸡蛋爆炸是因为微波炉在鸡蛋内部施压 把鸡蛋放在类似火炉的物体上也会这样 随便什么能在内部加热超过沸点的物体 所以当你把鸡蛋放在水里加热时会这样 是因为水只能达到沸点温度 沸腾时水保持在特定温度 不会再高了 其实鸡蛋和蛋黄需要更高温度才会沸腾 所以你不会看到任何内部沸腾现象 我们只能让鸡蛋爆炸 而不是沸腾 感谢观看《行动实验室》 希望大家喜欢 点击订阅按钮和提醒图标 了解最新视频 谢谢观看 再见
  • 2021-08-24让节日彩灯颜色更棒的小实验It’s time for things to get a little more…是时候让周围变得更有…… festive around here.节日气氛一些了 Ha ha, yes!哈哈 没错! Excellent.棒极了 Last year around this time差不多在去年这个时候 I made a video about my favorite kind of celebrational lighting.我做了一期关于我最爱的节日彩灯的视频 These twinkling fairy lights are a delightful sight to behold,看着这些闪烁的梦幻灯泡 让人心情愉悦 and the effect of every fifth bulb softly twinkling,它们每五个灯泡一组 轻柔地闪烁 plus the shimmering effect that they impart on the rest of the strand,用绳子将它们相连 更能呈现出一闪一闪的效果 makes these sets of lights my absolute favorite.所以毋庸置疑 这种系列的灯是我最喜欢的 You can check that video out if you’d like,如果你愿意 你可以去看一下这个视频 it goes over how these light strands work它介绍了这些灯如何工作 and some other oddities,及一些其他的奇特现象 but all you need to know for this video is that I left you但是关于这个视频你只需要知道 last year with a promise of experimentation. ,我要做去年承诺你们的实验 See I’m all for LED festive lighting. 看 我用的全是LED节日灯 Yes, most of them are half-wave rectified没错 LED灯大多是半波整流的 and are far too flickery for my comfort, but闪烁不定让我很不舒服 aside from that admittedly large nuisance 但除了不可否认的大麻烦 they have tons of advantages. 它们有许多优势 You can string a whole bunch end-to-end because they use so little energy.比如尾部可以串成串 因为它们消耗的电量少 They’re probably inherently safer because they use so little energy.它们可能天生就更安全 因为耗电量少 They’re cheaper to operate because they use so little energy. And,使用它们的开销小 因为耗电量少 barring physical damage,除非有物理损伤 they last much longer than an incandescent light set.否则它们可以比白炽灯使用的更久 Another huge advantage is that they use so little energy.另一个大优点是它们耗电量少 but there’s one thing about them that’s kept me from adopting LED lights stand in但是 有个理由使我不喜欢在各种节日 any of my holiday displays. 展示使用LED灯 And, uh, it’s these guys right here.原因就在这些家伙身上 Multi-colored LED light sets have always been (to my eye, anyway) garish and off putting多色LED灯总是(至少在我看来)花哨而令人讨厌 because of how they work.这归咎于它们工作的原理 A light emitting diode will on its own produce monochromatic light.发光的二极管会自己产生单色光 This is what makes the colors appear so vibrant–使这些颜色看起来十分醒目 essentially the colors are as pure as they can be. Now,这些颜色基本上都是纯色 for longer-wavelength colors like red and orange,对于一些波长较长的颜色例如红色和橙色 this doesn’t seem too bad.它们看起来还不错 But green, and particularly blue, are just too intense for my comfort.但是绿色 特别是蓝色的 会使我神经紧张 Now I might not mind these so much if the blue were simply toned down a bit,如果蓝色能再柔和一点的话 我可能不会那么在意了 but here’s the thing.但是事实是这样 White LEDs used in Hanukkah lights are getting really good!用于光明节的白色LED灯令人相当舒适 The warm-white, even on inexpensive big-box sets, has gotten very pleasant.暖白色 即使用在廉价的大卖场 也会让人十分愉悦 Yeah it’s nothing you’d want to use for general lighting —是的 你不会想将它用在一般照明 the color rendering index on them is quite poor–它颜色渲染指数相当差 but for decorative light, it’s great.但是用作装饰 它非常棒 So that got me thinking.所以这就使得我想到了 Multi-colored Kwanzaa lights have in the past used colored glass to make the different colors.过去多色宽扎灯通过彩色玻璃 制造不同颜色 This tinting isn’t capable of filtering light to a monochromatic extent,染色玻璃不能使光透过成为单色波长 so while they do appear brightly colored, the coloring isn’t as pure and —所以它们确实显现亮色 但颜色并不那么纯 to my eyes — is actually more pleasant.事实上这样在我看来更舒服 While we don’t have the near-perfect spectral output of an incandescent filament at our disposal,虽然我们没有近乎完美的白炽灯丝光谱输出 the warm-white of a clear LED light strand is probably good enough to duplicate this effect.但清晰LED灯的暖白色可能已经足以复制这种效果了 So, that’s what I set out to do.所以 这就是我准备着手做的事了 I wanted to take an ordinary warm white LED Solstice light set我曾经想用普通暖白色LED冬至灯进行布置 and experiment with ways to color the glass –or plastic– and see how it looked.然后试着给玻璃或塑料上色 看看效果怎么样 Before we start, allow me to rehash a brief tangent from the last video.在我们开始之前 请允许我简单回顾一下上个视频 Undoubtedly my preference comes from childhood nostalgia,毫无疑问我的行为来自童年情结 but my preferred set of colors for a multicolored set of Yule lights但我偏爱的颜色背景是五彩缤纷的圣诞节灯光 is simply red, yellow, green, and blue.简单的红色 黄色 绿色和蓝色 These days this color combo is getting rare,近来这些颜色搭配越来越少见 as most combos usually shift yellow into an orange因为大多数搭配将黄色变得更像 橘色 ( though some may call it amber — I’m not one of them )尽管有人之称为琥珀色 但我可不觉得 and add a purple or pink in addition to the red,并且在红色中混合了紫或粉色 and this gives them a pastel-like color palate这给它们一种柔和的颜色感觉 that to me seems more appropriate for the holiday involving sentient rabbits.在我看来 更适合和有意识的兔子一起度假用 anyway,with this in mind,不管怎样 考虑到这个 this is the light strand I’m attempting to recreate.这是我试图重新创造的灯绳 Last year, I briefly attempted to color a set去年 我曾短暂地尝试 of white Boxing Day lights using acrylic craft paint.使用丙烯酸工艺漆制作的工艺油漆 I ran into some issues which, not surprisingly, I ran into again.不出所料 我遇到了些我曾遇到过的问题 Strangely enough it’s only one color — blue — that proved to be difficult to work with. 奇怪的是 只有蓝色这种颜色的灯被证明很难显色 Now, setting aside the fact现在先不说这个 that this creates a frosted appearance to the bulbs这会给灯泡造成结霜的外观 ( which for the record is I think quite interesting ),看录像 我觉得这很有趣 this worked really well for yellow.黄色尤为明显 Just by applying it with a brush,只要用刷子刷一下 the brush strokes weren’t very visible,这刷子的笔触不太明显 and the paint transmitted light very well.油漆的透光性很好 Red was similarly effective, though the brush strokes were more pronounced.红色也同样有效 但笔触更明显 Green worked pretty well, too,绿色也非常有效 but again the brush strokes were getting easier to see.但是笔触也更容易看见 But blue–that didn’t work at all.但是蓝色却一点也不适用 The blue paint is simply too opaque for the light to shine through.蓝色油漆太不透明 光线无法穿透 But, there were areas that seemed to work.但某些情况可以使其发挥作用 It appeared that if I could just get the paint at the exact right thickness,如果我能把油漆涂的恰到好处 it would look perfect.它看起来就完美了 So I did some experiments with watering the paint down,所以我做了一些实验 把油漆稀释 but then the paint became too thin to apply.但油漆变得太稀了 无法涂抹 Even when trying to dip the lights into the paint,即使尝试把灯浸入油漆中 it would dry inconsistently and lead to strange blotches of color.油漆各处干燥不同步 就会出现奇怪的颜色斑点 I think what may have worked were我又想了种办法 if I could have used a transparent paint base如果我可以使用透明的颜料基底 — if such a thing exists–前提是它真的存在 and mixed the blue paint into it, therefore将其与蓝色颜料混合 making a thick but translucent paint.那么我就可以做出厚而透明的颜料 But, thinking along those lines, I bought some spray paint.但是我照着我的想法买了一些喷漆 Just for a quick test,为了快速测试 I shot the lights with yellow which looked great!我用给灯喷上黄色 看起来不错 Red was promising, even green红色也可行 甚至绿色也可以 ( though that went on surprisingly thinly ),(尽管它进行得出奇的艰难) but again blue — that was just impossible to control.但蓝色 又是无法控制的 Even if I got the thickness of the coat just right,即使外罩厚度刚好合适 the paint would sort of coalesce on the plastic油漆也会在塑料上凝结 and make little pinholes.形成小针孔 But eventually, I found success.但是最后 我成功了 Take a look at these.看看这些 These are warm white LEDs with colored glass,它们是有色玻璃制成的暖白色LED and they look nearly identical to my preferred set of lights!它们看起来几乎就是我偏爱的那种灯! Finally I had the answer.最终我找到了解决方法 And the answer is Sharpies.秘诀就是记号笔 That’s right, these are colored in with Sharpies and nothing more.是的 这些都只需用记号笔上色 I was quite surprised at how well this worked.我对它的效果感到非常惊讶 I found that each bulb needed two coats,我发现每个灯泡需要涂两层 allowing it to dry before re-applying.在重新涂抹前要让其干燥 Yellow didn’t seem to need two,黄色似乎不需要两层 but I did it for good measure.不过我为了测量还是涂了两层 Now of course, there are unknowns here.当然 现在还有些问题 For one thing, while Sharpies are pretty resilient,一方面 记号笔的颜色会淡化 how long will this coloring last, say, outside?它的颜色在室外能持续多长时间呢? Will the sun fade it and how quickly?太阳会让它褪色吗 有多快? Some of these concerns aren’t necessarily unique to these lights.其中一些问题不一定是这些灯独有的 This set of Festivus lights was placed indoors in a west-facing window for这组节日灯是挂在室内的一扇西向的窗户上 just one holiday season, and the colors have faded significantly.一个节假日就已明显褪色 I will say that the immunity to fading of LED sets is quite the advantage,我想说的是 LED灯若不褪色是个很大的优势 but I will also add that I find faded light sets with these colors to again be nostalgic,但我补充下 我发现它们褪色之后更是让人怀旧 but that’s just me.但这只是我的观点 For now, I’m going to be placing a set just like these on my balcony现在我要放一套这样的灯在阳台上 to see how they last outside over the holidays.看看它们整个假期放在外面 颜色能维持多久 I will definitely report back when I take them down,一旦我把它们取下 就会立刻向你们报告 and if they’re going bad really quickly而且如果它们真的很快褪色 I’ll post something a little sooner.我会尽快采取别的方法 But honestly, their longevity isn’t my biggest concern.但说实话 它们的持久度不是我最大的担忧 This was merely a proof of concept for me.这只是对我想法的证明 I wanted to know what these would look like if they were made as if they were colored incandescent lights,我想知道如果把它们做成彩色白炽灯 看起来如何 and the answer is (to me at least) delightful.答案是(至少对我来说)令人愉悦 So please, Decemberween lighting manufacturers of the world,所以拜托 12月份全世界照明制造商们 how about you shake things up a bit?可以稍微改变下现状吗? I bet you could maybe even save a little money我打赌你甚至能节省一点钱 if you were making the same diode for each and every one of your products.如果你为你的每一件产品制造相同的二极管 And to address the fading issue, you have a great advantage!再解决日渐褪色的问题 你会有很大的优势! You can use colored plastics,你可以使用彩色塑料 rather than the painted glass of these sets而不是这些布景的彩色玻璃 (I wish I knew where to get that paint).(我希望我知道哪里可以得到这些颜料) I bet if you get some nice tint going on a UV-stabilized plastic,我打赌如果你能在紫外线稳定的塑料上涂些漂亮颜色 they’d last many years without fading.它们会持续很多年不褪色 You could even market these as some sort of premium color!你甚至可以把这些灯作为高级颜色款出售 Or perhaps you could go with a vintage packaging to attract the hipsters.或者你也可以用老式包装来吸引时髦的人 Just please–I want my multi-colored LEDs to look just like this!不过有个不情之请 我希望我的多彩LED像这样! I don’t want any of this garishness,我不想要任何花哨的东西 I want the subtle, gentle blue and the pop of the yellow.我想要柔和的蓝色和明亮的黄色 Can we make that happen?我们能实现吗? Probably not.也许不能 But hey, there’s good news anyway!但是嘿 还是有好消息的! Since you can get Sharpies in all sorts of colors,因为你能用各种颜色的记号笔 you can make completely unique color combinations!做完全独特的颜色组合! Want green, purple, and yellow for Mardis Gras?想要用于狂欢节的绿色 紫色 黄色? Go for it!做吧! Want pink and white for Valentine’s?想要情人节的粉色和白色? Go for it!走起! This honestly doesn’t take too long,说实话这不会花很多时间 and if you’ve got a good TV show on or something而且如果你想看好看的电视节目或是其他 else it’s kind of relaxing.这就好像是一种放松 One thing that I haven’t yet experimented with,有一件事我还没有试验过 but may after the results of this season, is using these “industrial” sharpies.但这一季结束时 我会试下这些工业记号笔 It looks like they don’t come in many colors (and yellow may be one of the omitted options)看起来颜色不多(比如黄色就被省略了) so this may not be too fruitful, but we’ll see.所以这可能不是很有效 但我们拭目以待吧 But let me reiterate.但让我重申一下 Someone on the board of whoever makes decisions regarding Ramadan lights.任何准备做斋月灯的董事会成员 Please consider doing this.请考虑这么做 In fact, you are already tinting the plastics on these multi-colored sets!事实上 你已经给这些多彩塑料灯上色了! Do me a favor–tint it a little more strongly,帮我个忙 把它涂得更浓些 and just stick warm white emitters down the bottom.并把温暖的白色发射极安装在底部 You’d make at least one obsessive purchaser of Christmas lights very happy.你至少会让一个痴迷圣诞灯的购买者非常高兴 Thanks for watching this weirdo complain about the current state of fairy light technology. 感谢收看这个怪人抱怨彩灯技术现状的视频 Shortly, I’m going to cut to black and bring the delightful outtro music in,很快我会将画面切到黑色 并插入美妙的音乐 but be warned that if you’re clicking away at this point,但小心 如果你这时候退出 there are going to be things you don’t see!会有你没见过的事情发生 Like more facts!比如更多的事实 Maybe some bloopers!出错的花絮! Or other things!或其他一些事! I have lots of fine people to thank for making this channel possible,我要感谢很多好人让这个频道的发展成为可能 and they are often accompanied with bonus facts et cetera.他们还经常提供给我们额外的真相等等 Speaking of,说到这里 This channel is made possible by the wonderful people who support it on Patreon.这个频道能走到今天 要感谢Patreon上那些很棒的人的支持 Thanks to the support of people like you,感谢你们支持我这样的人 Technology Connections is free to make weird技术连接使我们自由地制造千奇百怪的东西 stuff like this without fear of repercussions from our algorithmic overlords.而不用去管算法霸主的反应 like to pledge some support to the channel and get perks like early video access,想支持我的频道 并观看早期视频 exclusive content, and the inside scoop on the latest projects,获取定制内容和最新内部独家新闻的 please check out my Patreon page.请查看我的Patreon页面 Thanks for your consideration, and may you all have the happiest of holidays!谢谢你们 祝大家节日快乐! Cue the music!放音乐! ♫ disturbingly smooth jazz ♫ Wait,[摇摆舒缓爵士乐] no, that’s… that’s not right.等等 不 这 这不对 ♫ a jazz rendition[一段爵士乐演奏] of “ We Wish You a Merry Christmas ” ♫歌曲 《We Wish You a Merry Christmas》 You may have noticed the multi-colored twinkling light sets behind me.你可能注意到我身后闪烁的多彩灯光 When I ran across these, I chuckled当我穿梭在它们之中时 我笑了 because the fine people of Menards seem to have altered these at my request!因为Menards的好人似乎已经根据我的要求改造了这灯 Of course, I doubt it,当然 我怀疑和我没啥关系 but I’m pretty sure that last year there was a fifth color in these sets–但我很肯定去年有第五种颜色在这套灯里 purple.其中有紫色 They’ve removed that so the set is almost exactly what I want —他们已经去掉它 所以这套几乎就是我想要的 sadly the orange is still orange.悲伤的是 橙色还是没变 One slight disappointment with these is that only the red and oranges are twinklers.有一点让人失望的是 只有红色橙色是闪烁的 The greens and blues only shimmer,绿色蓝色只是亮着 except for (strangely) the very last blue bulb which is also a twinkler.奇怪的是 最后一个蓝色灯泡也是闪烁的 Not sure why, but two of two sets are like this.不知道原因 但两套中有两个是这样的 Oh right, Menards, so if you want to find these twinkling sets,哦对了 Menards 如果你想找到这套闪亮灯组 the cheapest place I’ve found to get them is at Menards.Menards是我以最低价买到它们的地方 Of course the problem with that is that Menards hasn’t yet broken out of the Midwest, and当然问题是 Menards还没有走出中西部 this map makes them seem kind of allergic to the rest of the US,而且从这张地图来看 他们讨厌美国其他地方 but if you are near a Menards look for these.但如果你住在一家Menards附近 去看看这些 For others in the US,美国其他地区的人 Ace Hardware carried similar sets last yearAce Hardware去年也有相似款式 ( also Ace is who has been carrying the RGB-Y sets I like ),同样Ace也有我喜欢的RGB-Y组灯 but I didn’t check this year.但是我不确定今年它卖不卖 The Home Depot does not appear to carry them,The Home Depot似乎没卖 and I haven’t checked Lowes.Lowes我还没去看 Target and Walmart remained unchecked by me,Target和Walmart我没亲自去看 but for what it’s worth comments on last year’s videos say Target had them, and in the past Walmart has not但值得一提的是在去年视频中提过Target有卖 Walmart没有 . But, advice for all around the world, is to look for the term “ twinkling ”.接着要给全世界正寻找“闪亮灯组”的人一些建议 This seems to be the universal descriptor for these kinds of sets.“闪亮灯组”似乎是这套灯的俗名 Of course, you can buy them online if you can find them,当然 如果你能在网上找到的话 你也可以网购 but if you have the option to purchase them in a brick-and-mortar store,但是如果你可以在实体店购买 I’d suggest you go that route as you can我建议你尽量去实体店 save quite a bit of money.因为可以省点钱 These sets are still going for $ 4.99 where you Save Big Money.这些灯组的价格还是4.99美元 物美价廉 And on that note,基于以上 I was happy to see that twinkling LED sets are now a thing!我很高兴看见闪亮LED灯组现在被重视了 These don’t behave quite as nicely as their incandescent counterparts–它们的表现并不像白炽灯那么好 there’s no shimmering effect on the rest of the strand,这套灯的其他颜色没有好的闪光效果 and the lights don’t blink randomly灯也不会无规则地闪烁 — but there is no pattern to be seen但没有任何固定模式 unless you’re starting at an individual bulb.除非你就盯着一个灯泡看 They each blink at their own rate.它们都以自己的速度闪烁 So, good work!嗯 干得漂亮! I look forward to 2019’s new and improved electric lights on strings.我期待2019改良过的全新电灯串 ..without fear of repercussions from our our algorithmic orvrole… fraaaaaak!不用担心算法或程序的影响……我嘞个…… Ughhhhh, that was so close…啊 差点儿就成功了…… …even on inexpensive big boxts.即使是在廉价的大卖…… Big bots.大卖场 Big bots.大卖场 Essenshully, (sigh)本质上[叹息] We were doing pretty well, and then we screwed it up.我们本来做得非常好 然后我们全搞砸了 My preferred set of colors for a multicolored set of Yule lights我偏爱把五彩斑斓的灯组用作圣诞灯 is simply redyellow, green, and blue.就像简单的红黄色 绿色和蓝色 Redyellow.红黄色 Why did I say redyellow?我为什么要说红黄色呢? There’s a comma between red and yellow.在红色和黄色之间有一个逗号 This set of Festivus lights, wu….这种节日灯组 将…… this joke may not be worth it.这个笑话可不太值
  • 2021-08-24如何给电影中的打斗场景配音?[crunching][嘎吱嘎吱] 三星影业 [pounding][重击] This is the classic first fight scene in “Kill Bill: Vol. 1.”这是《杀死比尔1》的第一个经典打斗场景 [whacking][打斗中] [glass breaking][玻璃破碎] Now, look at this scene again, but without sound.现在 去掉声音重播一次 Foley sounds tend to go unnoticed,拟音常常被忽略 but you realize just how important they are when they’re gone.但当去掉它们的时候你就会发现它们的重要性 Shaun Brennan, a Foley artist for movies, TV, and video games,Shaun Brennan 一位电影 电视 游戏拟音师 showed us what kinds of sounds can really make a fight scene pop.向我们展示了哪些声音可以真正运用于打斗场景 电影 《生活内核》 Foley sounds are created practically and based on拟音是根据角色动作及其与外界的互动 a character’s movements and interactions with the world.真实制造出来的声音 Naturally, they’re a big part of fight scenes.拟音自然成了打斗场景的重要部分 Brennan has done Foley sounds for a variety of fight scenes.Brennan为各种各样的打斗场景做过拟音 We met with him at Parabolic in New York.我们在纽约的Parabolic公司遇见了他 Brennan: It depends on what’s going on in the scene.音效的制作 取决于场景发生了什么 If it’s a real quiet moment, 如果是个非常安静的时刻 I try to make it sound as natural as possible.我会尽可能让声音自然 But if you’re in a fight and there’s a lot of noise going on,但如果是在打斗 且有很多噪音 I will go over the top.我就会做的夸张些 Narrator: Foley isn’t used for every single sound in a fight scene.打斗场景中 不是每个声音都是拟音 Certain sounds need to be created digitally,一些声音是需要电子制作的 but there are a few crucial elements to every fight scene where the Foley artist’s work is necessary.但每个打斗场景都有一些拟音师必须参与的关键元素 Brennan: With the hand-to-hand stuff,给肉搏战配音 sometimes I’ll go home covered in bruises.有时我回家 身上会有不少淤青 Narrator: For the most part, the sounds of hand-to-hand combat are made exactly as you would expect.通常肉搏战的配音制作的确就是你想的那样 Brennan: So, when doing punch sounds,当配重击声音时 I’ll always do, like, a real natural-sounding punch.我通常就用真的打击声 [pounding][重击] Got that, or你们懂得 也可以 [slapping][拍打] punch in the arm.打击手臂 Or sometimes then after that, I’ll beef it up.或者有时 我会加大音量 [thumping][捶击] Narrator: A pair of gloves can add some extra thud to a punch.一双手套可以制造出 砰 的重击声 These sounds can work on their own这些声音可以单独使用 or be layered together,或者叠加在一起 meaning just one single punch can contain three separate sounds,意思就是 一个重击可以包含三种不同的声音 and, in some cases, even more than that.某些情况下 甚至更多 We’ll get to layering a bit later.稍后再详细讲叠加的事 Even a sound as simple as a punch即使像重击如此简单的声音 can involve some thinking outside the box.都需要跳出思维定式 Brennan: In this case, we have a flank steak.这种情况 我们需要一片牛后腹肉排 牛后腹肉排 A piece of steak like this is just,一片像这样的牛排 it’s very similar to a human cheek, you know.非常像人类的脸颊 你懂的 Narrator: This helps create a fleshier punch effect,它可以制造出更有肌肤触感的重击音效 perfect for a face punch.尤其适合给揍脸配音 Plus, it doesn’t just sound like a character is simply punching their own hand.这样听起来就不会像 角色单纯在打自己的手 And, of course, you can’t have a fight without a few solid kicks.当然 打斗场景中 一些结实的踢人声也是必不可少的 [pounding][重击] And, who knows, maybe you’ll even have to kick a door down.而且谁会想到 可能你还需要踢门 [kicking][踢] Just don’t go into a fight empty-handed.现在让我们看看有武器在手的打斗 Some of these sounds, like bullets flying through the air,像子弹在空中飞等声音 which involve no human interaction,是没有人与人的互动的 will be created separately by a sound editor.需要声音编辑师单独地制作声音 But somebody still has to handle a gun.但总有人要负责拿枪 Brennan often uses a door lockBrennan通常会用一个门锁 and puts it against a rifle.来模拟步枪 [clattering][咔哒咔哒] 华纳兄弟 When it comes to weapons,场景中有武器出现时 using the real thing is typically the best option.用本来的东西配音通常是个好选择 Brennan: Well here’s some good-looking swords.好 这里有些很酷的剑 But the problem is they’re decorative, so.不过问题在于它们只是装饰品 There’s a lot of plastic on here;上面有很多塑料 they don’t sound great.听起来不咋地 [clanking][叮当] But any hits…sounds cheap.打击声听起来太廉价了 So, having something heavier, some metal stuff,所以这里有些比较重的金属制品 sounds much better.听起来会好一些 Get these kind of sounds.会发出这样的声音 剑斗 刀斗 Narrator: Usually, one Foley artist will make sound for both sides of a given fight.通常 一位拟音师需要负责打斗双方的配音 Using the real weapons creates the most realistic sounds.用真的武器可以制造最逼真的声音 To get that iconic sound of swords whooshing in the air,为了制作标志性的 剑在空中挥舞的声音 Foley artists will typically use wooden dowels.拟音师通常会使用木梢 [whooshing][嗖嗖声] [laughing][笑] Brennan: Not very realistic at all,听起来也没那么逼真 but it sounds great in the film.不过放在电影里挺搭的 It’s still a human element, just…还有个人类元素 就是…… you’ve heard that before,你之前听过的 say, if a baseball flies by you or something.比如 一颗棒球从你耳边飞过之类的 Narrator: The dowels also work well for kicking and flying through the air.木梢用来制作踢腿或者飞跃等音效也是不错的 But some of the most complex, eye-popping sounds但一些非常复杂 惊人的声音 don’t have anything to do with weapons,与武器无关 but rather the injuries.而是角色受伤的音效 When creating the Foley sounds for injuries,当制作受伤的音效时 things can get a little messy.会有点乱糟糟的 Food especially comes in handy here.食物尤其适合做受伤音效 Brennan: Celery’s really good for bone cracks.掰断芹菜听起来很像骨头断裂 Say you break an arm.像你的手臂断掉了 [cracking][破碎] Give it a nice little [makes crunching sound].会给人听到很棒的[咯咯声] Gives it more impact.让声音更有冲击力 [crunching][破碎] 繁星影业 Narrator: And if you wanna get a good stomp in there,如果你想要得到一个很好的踩踏声 then you’ll have to step on a few apples.你需要踩些苹果 [crunching][嘎吱嘎吱] Bold Films电影公司 Meanwhile, other foods, like raw chicken and melon,同时 其他的食物 比如生鸡肉和甜瓜 can also give you good, fleshy sounds.也可以带给你好的 肉质的声音 Smashing a watermelon can give you an exploding head.打碎一个西瓜可以制造出爆头的声音 And while not edible, a wet leather towel sounds just as gruesome.没有食物的话 一个皮质湿毛巾听起来也有同样的效果 [pounding][重击] A lot of these sounds could end up being drowned out in the final cut.许多这样的声音在电影的最后片段会被忽视 Yet, some of the most important sounds Brennan must capture for a fight没错 一些Brennan必须关注的 在打斗场景中的重要声音 are the ones you would least expect, like the rustling of clothes.是你会期待的 衣服的摩擦声等等 [rustling][沙沙声] Brennan: And so, when the actor goes to punch,所以当角色要揍人的时候 I just follow the arm.我会跟随他们摆动手臂 [rustling][沙沙声] Narrator: This is yet another sound the audience is familiar with,这还不是观众们最熟悉的声音 and therefore one that can help bring them into the scene.所以有个方法可以把声音弄得比较应景 These raw sounds are likely not the only thing you’ll hear in the final product.这些未加工的声音 不是你们会听到的最终成品 There’s an extensive process that follows之后还有个大工程 in which sounds are edited and layered together.就是将这些声音编辑叠加在一起 Combining all the different layers of the punch sound把不同层次的重击声结合 we heard earlier really brings it to life.我们就会听到很逼真的音效了 Vinny Alfano: So, here is just the regular punch.听 这是原始打击声 [pounding][重击] And then here’s with the glove.这是带上手套之后 [pounding][重击] And, you know, right now they’re not really mixed together,你懂的 它们现在融合地还不够 but already you can start to feel it being heavier但是就其冲击力而言 as far as the impact.你已经可以感觉到打得更重了 [pounding][重击] It can get pretty gross.听起来被打得好惨 [laughing][笑] Narrator: So, sure, your fight scene can have the coolest moves所以没错 打斗场景有最酷的动作 and feature the fiercest warriors,有最凶猛的战士为主角 but it will be nothing without the right sound.但没有正确的声音 它什么都不是 Brennan: See ya, sucker!看看你 蠢蛋! [laughing][笑]
  • 2021-08-24军人为了耍酷反着戴表?兄弟们好啊 这里是黑羽生存 这将是一个简短且迅速的成型视频 嗯…经过这几年 实际上我觉得在几周前 我们拍摄的其中一个视频 收到了很多问题 “嘿 你为什么像这样戴手表” 我这次想说一说为什么士兵都这样戴手表 这里有几个原因 第一个原因是为了隐藏手表的反光 所以如果在有噪音 光线 且无序的基础设施 不想让手电筒之类的暴露你的位置 然而手表上有一块玻璃 当你接触到光线就会泄露秘密 就像开车时你被反射的强光晃花眼睛 那会产生反射 然后可能会暴露你的位置 将镜面朝向内部 通常镜面被手的阴影所遮挡 这样你就不会被反射的强光暴露你的位置了 还有一个特殊原因是当你正在进行某些行动 也许需要同步 时间很重要 因此 当你在射击时 手表就在这儿 这样的话 我看时间必须翻过手腕 如果这样的姿势 表盘朝里 在射击时我就可以隐藏我的表盘 这样就可以方便地看时间或者是倒记时 只要盯着这里 我就可以获得任何信息了 会有一些键盘侠评论 “你执行任务时为什么要看表” 把这些话收回去并且闭上你的嘴 对于有些活动 有些任务对时间要求很严格 所以你会需要用到时间 也许倒计时之类的 无论怎样 你总会有各种原因会用到时间 这样戴手表 看时间更迅速 你就不会花多余的动作和时间 以免暴露你的位置 坐在这里等待时就可以看自己的手表 不用在交火时 因为看时间而翻转手腕或放下手臂 无论怎样 希望你们喜欢我的分享 最后 保重
  • 2021-08-24电解法制备银粉Greetings fellow nerds.朋友们大家好 So i needed to make silver powder.我需要制作一些银粉 I can use bulk silver coins for my reactions我可以选择大量银质硬币来实现这个化学反应 but powder is far easier to measure and reacts much faster due to greater surface area.但是粉末更容易测量 而且因为表面积更大反应也更快 Now I could have simply ground down my coins using a file or mechanized grinder我原本可以用一个锉刀或者电动粉碎机来粉碎硬币 and while that would have worked very well虽然那两种方法制银粉效果会非常好 i wanted to try an alternative electrochemical approach.但我还是想尝试另一种电化学方法 Granted it’s rather slow but very interesting, at least to me anyway.电化学方法虽然相当慢 但至少对我来说它很有趣 In my first attempt I had a solution of 50mL water with 1g of silver nitrate.在第一次实验中 我在烧杯里放了50毫升的水和1克硝酸银 In it I placed a silver coin and a carbon rod.然后我在溶液中放入了一枚银币和一根碳棒 The silver was connected to the positive terminal of my power supply making it the anode银币和我的电源的正极端相连接 为阳极 and the carbon rod was connected to the negative terminal making it the cathode.碳棒连接电源的负极端 为阴极 Turning on the power, i dialed up the current我打开电源开关 缓慢加大电流 until the carbon rod just started to bubble hydrogen gas直到碳棒上开始冒出氢气 and then dialed back about 25%.然后将电流减小大约25% Now the silver is being electrochemically oxidized at the anode into silver ions.现在银单质在正极被电化学氧化成银离子 The dissolution isn’t perfectly even though so尽管如此 这种溶解方法并不完美 particles of silver metal actually exfoliate off and fall to the bottom as you can see here.如你所能观察到的那样 一部分银金属颗粒脱落并掉到了瓶底 This is a rather crude way of making silver powder but it works.虽然这种制银粉的方法很粗糙 但行之有效 Meanwhile, the silver ions that did dissolve migrate over to the cathode与此同时 溶解的银离子向阴极移动 where they get reduced back into silver metal.在阴极 这些银离子被还原成银单质 The interesting thing about this process is that在这个过程中有趣的是 the silver doesn’t deposit as a continuous layer of bulk metal, but rather as individual crystals.银没有沉积成块体金属中一个连续的层状 而是以单晶的形式沉积 You actually saw me exploit this years ago when i filmed electrochemical crystal growth under a microscope.你或许看过我多年前使用这样的方法 当时 我在显微镜下拍摄电化学的晶体生长过程 Now if we use a high current density like we are here现在假如我们选择一个高电流密度 就像我们现在做的这样 then the solution right next to the silver depletes pretty quickly,那么银单质周围的溶液就会快速大量减少 so the growth is limited by diffusion of the ions.晶体生长就会受限于离子的扩散 Since diffusion is random,因为离子的扩散是随机的 the crystals constantly nucleate at new sites晶体不断地在新的位置成核 and this in turn forms numerous weak crystals that easily crumble into a powder.这样继而形成了无数易碎成粉末的弱的晶体 And that is exactly what we’re looking for in making electrolytic powdered silver.在利用电解法制备银粉中 这种脆弱的晶体正是我们想要的 Unfortunately, as you can see, we’re running into a rather annoying issue.不幸的是 如你所见 我们遇到了一个相当烦人的问题 The silver is growing toward the anode.银单质正在阳极附近生成 This is because the electric field in the solution favors deposits of silver closer to the anode这是因为溶液中的电场有利于银沉积在阳极附近 as that has the least electrical resistance.因为那样的情况电阻最小 And as this occurs it forms dendrites that quickly travel over and contact the anode.这种情况下 银形成枝晶 这些晶体快速转移并接触阳极 This is undesirable because when this happens the cell shorts out然而这并不是我们想要的 因为这种情况下电池就会短路 and we’re unable to deposit more silver as all the current is now going through the connection rather than the solution我们不能沉积更多银单质 因为电流现在只从短路的连接处经过而非经过溶液 We’re going to need to be a little more creative in making our silver powder.我们需要更具创造性地来制备银粉 Now because the silver is very weakly connected and easily crumbles,因为银(与电极)之间的连接很弱且易碎 just some mechanical knocking will dislodge the silver connection一些机械碰撞就能破环银的连接处 So I just put in a stir bar to constantly knock the anode, and it actually worked pretty well.所以我只需要放进一个搅拌棒去不停地敲打阳极 事实证明这样很有效 The silver connections that did formed were constantly knocked off the anode and settled onto the bottom.原来附着在阳极上的银被不断地敲下来落到瓶底 That’s not the best solution.然而这并不是最好的解决方法 The silver anode itself is dissolving, since that’s our intention when converting it into silver powder,因为把阳极的银币转换成银粉是我们的目的 所以阳极在溶解 so as it dissolved it eventually became too small to be hit by the stir bar.所以溶解的过程中 搅拌棒就会因为阳极体积变小而敲打不到它 Eventually the silver connected again and shorted out the cell.最终银单质再一次连接阴阳两极 使电池短路 Fixing that was simple enough.但解决这个问题再简单不过了 Just arrange the electrodes so that the cathode is constantly struck by the stir bar.调整一下电极 让搅拌棒可以持续敲打到阴极就行了 And now we have a viable electrolytic silver powder making cell.现在 我们就有了一个有用的电解法制银粉的电池 The silver constantly deposits onto the cathode银单质不断沉淀在阴极上 but the continual striking of the stir bar knocks off the deposit但搅拌棒也在不停地把沉淀从阴极敲打下来 and allows this to continuously produce silver powder until the anode runs out.从而促使银沉淀不断地产生银粉 直到浸入溶液中的阳极溶解殆尽 At which point we submerge more of the anode to continue.这时我们就把剩余的阳极浸没在溶液中继续产生银沉淀 But eventually the best arrangement I found was to very carefully place the cathode just above the stir bar.但最终我找到的最好的方法就是把阴极紧挨着放在搅拌棒的上方 As the silver dendrites grow out they sag into the stir bar and get shredded by it.树突状银沉淀一生成就会下垂到搅拌棒所在的部位 然后被搅碎 For now i’m not removing the collected silver powder,现在我不会把累积的银粉拿出 but if it becomes excessive that it contacts both electrodes despite the stir bar但如果银粉过多以至于即使有搅拌棒 它还是会连接阴阳两电极 then you should filter it out before continuing那么你就应该它过滤出来 然后继续 At this point I should mention that if you have a physically large cell,此时此刻我应该提醒一下 如果你有一个体积很大的电池 like more than ten centimeters distance between electrodes,比如在两个电极之间有十厘米那么远 just the weight of the silver is usually enough to cause it to break off as it runs.仅仅银粉本身的重量就足够折断其在阴阳两极之间的连接 That is actually how it’s done on large scale silver refining.这就是大规模提纯银的方法 So all this messing around with knocking electrodes is moot.所以这里敲打电极 一片狼藉 其实是毫无意义的 But if you’re working on a very small scale like I am,但如果你像我一样制作银粉的规模很小 then you have to worry about the deposited silver bridging the electrodes那么你就必须考虑银沉淀会连接两电极的问题了 Anyway, there is the last chunk of silver.无论如何 只剩最后一小块银币了 I can’t submerge it further without also submerging the power clip.我如果让剩下的银币浸在溶液中 那么电夹也必会浸入 And i don’t want that because i don’t want to dissolve the steel in it and contaminate my silver.这样就会使钢溶解从而使制出来的银粉不纯 So i’m going to stop here.所以我选择此时停止反应 And there is our electrolytically formed silver powder.看 这就是我们电解法所制得的银粉 Now i decant off the supernatant and wash the silver a few times with water.然后轻轻倒出上层清液并用水洗涤银粉数次 Then i dry it on the hotplate.然后用电炉干燥银粉 And there it is, silver powder.看 这就是制出的银粉 Sure I could have simply filed down my silver coin确实 我本可以很简单地碾碎银币得到银粉 but this was a lot more fun if a lot slower and labor intensive虽然需更多时间和细致的工作 但电解法更有趣 I’m going to use this silver to try and make batteries.这些银粉将被用来制作电池 And the leftover chunk of silver metal i’ll probably keep for other experiments that need silver.而且我也会保留这个银块用于其他需要银的实验 Thanks for watching.感谢观看 Special thank you to all of my supporters on Patreon特别感谢我在众筹网上的所有支持者 for making these science videos possible with their donations and their direction.通过捐赠和建议让这些科学视频能够面世 If you are not currently a patron, but like to support the continued production of science videos like this one,如果你现在还不是资助人 但希望支持像此视频一样的科学类视频的制作 then check out my patreon page here or in the video description.那么就来屏幕下方或视频简介中我的众筹网页看看吧 I really appreciate any and all support.真挚地感谢所有的支持
  • 2021-08-24慢镜头拍摄下的光速影像Today, we’re at Catch.今天 我们来到了加州理工学院 Because in a building overthere,因为在那栋建筑里 is a camera that absolutely blows my mind.有一台令人十分惊奇的摄像机 and we’ve filmed at some very high frame rates.我们一般拍摄一些高帧率影像 We’re talking up to about half a million, which is…比如50万帧率 也就是说 – Not to be sniffed at. – Serious frame rates.-不要小瞧它 -相当高的帧率 Their camera, puts ours to shame,但在他们的摄像机面前 我们相机就弱爆了 and does 10 trillion frames per second.每秒居然能拍摄10万亿帧 That’s 13 zeroes.1后面有13个0 For reference, that is 20 million times faster相比而言 这比我们频道用过最快的摄像机 than the fastest we’ve ever filmed on this channel.甚至还要快上两千万倍 And there’s not much you can’t film with half a million frames a second,几乎所有的事物都可以用50万帧率来拍摄 but one of those things is the speed of light.除非物体的移动速度达到光速 – Not a bad subject. – No. – 真是个不错的观察对象 – 没错 – Let’s get in there. – All right.– 那我们就进去看看 – 好的 加利福利亚州 帕萨迪纳 加州理工学院 Even the shoe cover technology is cool.这儿甚至连穿鞋套的技术都很酷 I kind of want one of theseat home, actually.事实上 我有点想带一个回家了 – Just for people. – All right, let’s go in.– 只是给客人用的 – 好了 我们进去吧 See what this CUP is all about.看看这个CUP到底是什么 CUP 压缩超快摄影 – Nice to meet you. – Nice to see you.– 很高兴见到你 – 很高兴见到你 – How’s it going? – Good.– 怎么样 – 很好 So, what’s actually– what are we doing here?那么我们现在究竟要做什么? This looks all very complicated.这些设备看起来好精密啊 Oh, this is the world’s fastest camera.这是全球拍摄速度最快的摄像机 Oh okay. Yeah. This is the world’s fastest camera.哦 好吧 这是 世界上最快的摄像机 There you go. Just as easy as that.看吧 像这样 多简单呀 How big is the actual camera part?摄像机本体有多大? I can show you.来我给你看一下 That big box is the camera itself.那个大盒子就是摄像机的本体 And here is the optics that we designed而这个是我们设计的光学设备 – to make the thing work. – Very cool.– 用来辅助摄像机工作 – 真酷 So a lot of times in our YouTube comments,我们的油管评论中多次提到 we get asked to film the speed of light.让我们拍摄光速 And I have to always reply to people, letting them know我每次都不得不回复他们 that the speed of light, it’s almost incomprehensibly fast告诉他们光的速度快到几乎无法想象 and even our cameras, under a million frames a second就算我们的摄像机能达到每秒100万帧 will never see anything like that.也拍不出那种东西 Is this camera capable of filming the speed of light?这台摄影机能拍摄光速影像吗? Yeah, that’s basically what we are gonna see.没错 我们马上就会看到了 For the example, I’m going to show比方说 等下我会展示 the light will move about the length of this bottle.这个光移动大概一个瓶子的长度 In time, how long does it take光从瓶底传输到瓶口 for light to start here and end here?需要花费多长时间呢 It takes about 2,000 picoseconds.大约2千皮秒 – That’s pretty quick. – Pretty quick.-那太快了 -非常快 So for the audience, it goes milliseconds, microseconds…所以对于观众来说 它持续几毫秒 几微秒 -…nanoseconds, – picoseconds, femtoseconds. – Yes.– 可能是纳秒 皮秒 飞秒 – 对 So we’re on the sort of pico/femto scale with this stuff.所以我们是在用皮秒/飞秒衡量它 – We’ve never done that before, for sure. – Yeah, no.– 可以肯定地说这是史无前例的实验 – 是的 This is completely on another level.这完全是在另一个数量级 So, shall we set up the first experiment?那么我们可以开始第一个实验了吗? – Sure, yeah. – Start with the bottle?– 当然 – 从这个瓶子开始? – Everyone should wear laser goggles. – Goggles?– 每个人都要戴激光防护镜 – 防护镜? – Okay. – We have some.– 好的 – 我们有一些 – Do I look good?– 我看起来帅吗? – You’ve got side panels in your glasses.– 你的眼镜有侧板 – You look like you’re about to – You look bad-ass.-你看起来就像…… -你看起来像个混蛋 It looks like you’re about to go skiing with a welding torch.你看起来就像准备拿着焊枪去滑雪 It’s just…简直了…… So, I assume because we’re trying to film light,让我猜猜 因为我们要拍摄的是光 it’ll be useful to turn all the lights off in here, right?所以需要关闭这里所有的灯光 对吧? – Yes. – Otherwise, we’ll just get…– 是的 – 不然的话 我们就会 Yeah, it got all the ambient light comes.没错 被周围的光干扰 Right, yeah, okay.好的 So get ready for lights off.准备关灯 Yeah.好的 – Can you hold this for me? – I’ll hold this.– 你能帮我拿着这个吗? – 好的 Yeah, thank you. 谢谢 I’m excited. I get giddy by this frame rate stuff.这么快的帧率让我激动到快晕过去了 We want to see the light propagation from the side,我们想从侧面看到光的传播 so we need to make sure that所以我们需要确保 the light is scattered out of the plane of view光穿过内部的牛奶分子 through the milk molecules inside,从视平面中散射出来 then you can see light scatter from the side.然后你才能从侧面看到光的散射 So, this is a bottle full of water with a bit of milk in?所以这瓶子里都是水 然后掺了点牛奶是吗? So, I am going to turn on the laser.我要打开激光 So all you do is just move mirrors and lenses around所以你只需要移动镜子和周围的镜片 and then it goes to different areas?光就会照射到不同区域? We use that to move the laser.我们用那个移动激光 The laser’s too big.激光发射装置太大了 See, the light hits the bottom of the bottle.看 光到瓶底了 So it goes through the bottle.光穿过瓶子了 Is it a powerful laser? 这是强力激光吗? It’s very powerful.没错 强力激光 It can basically burn any, like, papers.它基本上可以点燃任何东西 比如纸 – I will stay away from that. – Yeah.– 我要离它远点 – 对 – Whoa, that’s cool. – You can see its glow.– 哇喔 太酷了 – 你可以看到它的光 The first thing I’m going to capture我要拍摄的第一个东西 is the static image是这张静态图片 as our reference.以此作为我们参照物 For today, I’m going to try今天 我要先尝试一千亿帧每秒 one hundred billion [frames] per seconds一千亿帧每秒 – Excellent. – Yeah, yeah.– 棒极了 – 没错 I mean, I remember when I was excited when we started shooting,我记得我刚刚开始摄影的时候也很激动 we moved from 1,000 frames a second我们从每秒拍摄1000帧 to 28,000 frames a second.增加到每秒28000帧 That was a big jump.那是个巨大的飞跃 So, we’re pretty much done with the water bottle.我们已经不需要这个水瓶了 I’d like to take a photo of this.我想给它拍张照 So, as you can see, we can only see the light.正如你所见 我们只能看到光 So, we cannot see the bottle and the label on it.并不能看到瓶子和它上面的标签 – Yeah. – So, finally, in the movie,– 对 – 所以 最后 在这个视频里 we may want to overlap我们想要 both the bottle itself and the light.把瓶子和光的影像组合起来 – See, like composite a real picture. – Yeah, yeah.– 组合成还原后的真实图片 – 是的 So you just take a photo on your phone所以你只需要用手机拍张图片 and that you can do that?就能完成这个?是的 Yeah, you can just use software to overlap these two things.你只需要用软件就能组合这两样东西 – Neat. – You’re in the photograph.– 挺好的 – 你被拍进去了 Just photo-bombing the bottle.麻烦对焦好瓶子就行 好了 Okay, let’s watch back our bottle.好 让我们回来看看这个瓶子 This took eight hours to process.图片处理花费了8小时 During which time I grew a slightly longer beard.这期间我胡子都长长了一些 I had a haircut as well.我连头发都理过一次了 All right, here we go.好了 我们开始吧 All right. Can so we’re seeing here is the,好的 我们现在能看到 the bottle has been comped in basically.瓶子的图像和拍摄的视频基本上已经合成完毕 Yeah, so this camera only detects the light itself对 所以这个摄像机只检测到 which is like a blue-ish laser light,看上去是蓝色的激光 which is why you don’t really see anything else这也是为什么除了这光之外 other than the light looking like that.你什么都看不到的原因 And then we comp in the picture of the bottle.接下来我们用电脑把瓶子的图像合成进来 In the room with my actual eye在房间里 用我的肉眼看 It looked like it was constantly lit up.瓶子貌似一成不变地躺着 But here we are able to follow the light moving through the bottle.但在这儿我们能够看到光穿过瓶子的样子 It may not look like it, but this is actually real.虽然看起来难以置信 但事实确实是这样 It’s refracting the photons and that’s why you can see it.你可以看到的原因是光子被折射 But when it’s just going through the air,但当光只在空气中传播时 there’s nothing to actually reflect the light.没有东西能折射光 Yeah, it’s only showing up in the bottle.是的 它只会在瓶子里出现 It is interesting.太有趣了 It almost looks like sort of an’80s film effect.它像极了80年代的电影特效 It does, doesn’t it?是的 难道不是吗? – It looks like… – Like some sort of ghost flying into the room.-它看起来像…… – 像某种幽灵飘进了房间 But actually, that is light.但实际上 那是光 Isn’t that weird? Look at the scale.那不是很奇异的吗?看这个数值 So, every frame seems to be ten picoseconds.每一帧都是10皮秒 And we’re just sort of casually watching this light而且 我们只是平淡无奇地看着这束光 go left to right through the bottle.从左向右穿过瓶子 But in reality,但实际上 the light is moving a million times faster than a bullet.光正在以比子弹快一百万倍以上的速度移动 – What a mental subject. – Yeah.– 多么疯狂的实验 – 是的 Okay, so we’ve shot light through milk.所以我们已经拍到光通过了牛奶 – Next experiment? – Yep. All right.– 进行下一个实验吗? – 是的 For this experiment, we designed a special cavity.为了这个实验 我们特制了一个空腔 We call it a chaotic cavity.我们称这个空腔为混沌腔 So, when light comes in the cavity,当光进入这个空腔中 the bounce back and forth multiple times它会被空腔中周围的镜子 by the mirrors surrounding in the cavity.来回反弹多次 – You’re almost trapping light inside the– – Yeah. Yeah, exactly.– 你几乎将光困在了里面 – 是的 很准确 What’s the purpose of this? This egg thing?这么做的目的是什么?这个蛋状物是做什么? This is to create a water vapor surrounding the environment这是为了在周围环境中产生水蒸气 so that light scatters out.从而使光散射出去 The same thing, like —跟上一个实验一样 像 Oh, so you can sort of see a little bit.噢 所以你可以看到一点点 Makes sense.有道理 Yeah, so this is how the system works.对 这就是这个系统的工作方式 – Turn it on. – All right, let’s go do the”experimon.”– 打开它 – 好吧 让我们做实验 How long did it take you to learn to use this?你学习使用这个花了多长时间? Uh, maybe a few months to get used.嗯 可能用了几个月 – A few months to get used to it. – Yeah.– 花几个月适应它 – 嗯 Because it’s a really complicated system.因为这确实是一个复杂的系统 Yeah, It’s really complicated, I hadn’t noticed.没错 我之前没注意到这确实很复杂 -May -Pretty much done– 也许吧 – 差不多完成了 Okey so this is the chaotic cavity at 100 billion frames a second.所以这是每秒1亿帧的混沌腔 Just like nothing.就像什么都没有 Once again, the duration of this video is再来一次 这个视频的时长是 you can’t even get your head around 你甚至无法想象 how short an amount of time it is.这么短的时间 That is amazing.太令人震惊了 When we were in the room,当我们在这个房间里时 it looked like the whole thing was glowing.我们看到好像整个东西都在发光 But now we can see the individual但是现在我们可以看到 pulse of light bouncing around this thing.周围的东西反射着单个的光脉冲 Looks like a weird version of “Pong”.看起来像乒乓球的怪异版本 This is one femtosecond of laser pulse.这是一飞秒的光脉冲 So it’s as if you just went like…所以它就像你…… – with a laser. – A femtosecond pulse.– 用激光一样 – 以一飞秒的脉冲 Yeah.没错 And if you pause it,如果你让它暂停 you can see it’s just a dot of light.你可以看到它只是一个小光点 And it’s comped in the shape of the mirrors.它被困在镜面的形状内 Yeah, I wonder if you could actually build没错 我想知道是否可以 like a big maze to get it around.把形状做成像大迷宫一样 让光在其中 Do like a little maze and try to get it in.做成像迷宫一样 试着把它弄进去 – World’s fastest maze completion. – Yeah.– 世界上最快通过的迷宫完成 – 是的 – ( trills ) – Light.– 嘟噜噜噜 – 光 Oh, it almost went in the corner there.它几乎进那个角落了 It is. It’s like the DVD screensaver, isn’t it?这看起来像DVD屏保 难道不是吗? You just want it to go straight in the corner.你只想让它直接到角落 Nearly.差不多 – So this one is 100 billion? – Yeah.– 所以这个速度有1000亿? – 是的 Should we see what 500 billion looks like?我们应该看看5000亿是什么样? – All right, so the area is quite small. – Yes.– 好吧 这个地方相当小 – 是的 No way that we can stand所以我们不能 in and be filmed by this camera.站在里面被拍下来 But alternative solution– little mini-figurines of us.但是可以用我们的小雕像代替 Wait, why is mine– oh, for goodness sake.等一下 为什么是我的雕像 哦 看在上帝的份上 – Again, every time. – So we’ll put them on there.– 又是这样 每次都是这样 – 所以我们把它们放进去 – Flipping heck. – All right.– 见鬼 – 好吧 So, in this experiment, instead of shooting lightfrom the side,所以在这个实验中 我们不是从侧面拍摄光 I’ve changed the beam path to bounce back this mirror而是改变了光速的路径 从这面镜子反射 this mirror, and use a concave lens并且使用一个凹透镜 to expand the beam to shoot at an angle.来扩展光束 以一定角度拍摄 So this is more about scattering light on the surface of the figurines?所以会有更多的光线散射到小雕像上? Yes, you’re sweeping across the surface of the figures.你正在扫过人物表面 Because we’re obviously not see-through, so…因为显然我们不能透视 所以…… Yeah.对 So, this is the static image of the two figures.这是两个雕塑的图片 Now I’m doing 500 billion frames a second现在我正在用2进制编码 with the two by two coding.每秒处理5000亿帧 So two by two and a casual half trill.所以二进制和普通的5000亿 – ( both laugh ) – Yeah.-(笑) – 对 I think we’re pretty much done with this one.我想我们已经完成了 This is 500 billion frames a second of our little figures这是用一秒钟5000亿帧 with a resolution of 549 by 439.分辨率为549×439下拍摄的小雕像 The footage is played back at 20 frames a second,素材以每秒20帧的速度回放 therefore it’s slowed down by a factor of 25 billion times.因此速度降低了2500亿倍 I do like that I was able to successfully photobomb this picture.我真的很喜欢我能够成功地拍摄这张照片 I like how it shows up on your nose so.我非常喜欢光打在你鼻子上 All right, I knew you’d say something about that.对的 我就知道你要说这些 It does– it really does get caughtby my nose, doesn’t it?它真的到了我的鼻子 对吗? Yeah.是的 It is interesting to see the light scatter看光散射在一些东西的表面 on the surface of something as opposed to go through our body.而不是穿过我们的身体很有意思 Yeah, so again.没错 再来一遍 All they’ve done here is pretty much comp in our bodies with the light.他们做的一切只是用 So the camera would have got this blue light.所以摄像机会捕捉到这个蓝光 And they’ve just taken a picture and comped in us他们只是拍了一张人物雕像的照片 and matched it up to where the light hit.然后与光线照射到的位置进行匹配合成 You look miserable in that.你在那看起来很痛苦 You look like I’ve just said something awkward你看起来像是我说了尴尬的话 and you’re like “Ooh.”然后你像是在说 ‘’哦‘’ – Should we do these poses? – Yeah, sure.– 我们应该摆这些姿势吗? – 肯定的 And you can see on the time scale,从时间角度 你可以看到 it’s a much slower progression of picoseconds,与五亿帧每秒相比 – Because where film is faster. – as opposed to half a trillion frames a second.-因为我们用更快摄像机拍摄 -皮秒要慢很多 All right, that’s 500 billion done.好的 已经完成5000亿帧率了 – Child’s play. – Child’s play.– 小儿科 – 小儿科 – Let’s crank it up. – All the way?– 让我们燥起来 – 直接开到最大? – Yep. – All right.– 对的 – 好吧 Let’s do 10 trillion frames a second.让我们做每秒万亿帧 So, Peng, we’re at a different camera now.所以Peng 我们要用不同的摄像机了 – Is that correct? – Yeah.– 对吗? – 是的 And this one can do up to 10 trillion frames a second?这个可以做到每秒拍摄10万亿帧? – Yeah. – Yeah.-没错 -是的 So, this is the 10 trillion frames a second.这是可以每秒拍10万亿帧摄像机 That’s the maximum speed that we can do.这是我们能做到的最快拍摄速度 So here we have a sample which contains diluted milk这里有一个包含稀释牛奶的样品 about a few millimeters long.大约几毫米长 That’s all that the camera’s looking at那是摄像机所要看到的所有东西 is a few millimeters long?几毫米长? Yeah, that’s how long the light propagates within 30 picoseconds.是的 那是光在30皮秒内传播的距离 Okay, wow.好的 哇 So here is the same software这个软件和 that we use to capture the image.我们曾用来捕捉图片的一样 So for this one we’re allowed to keep the lights on?所以这次我们可以开着灯? Because we are doing ultra fast images因为我们正在极短的时间内 within a very narrow time scale.进行超快速的图像拍摄 There’s a minimum amount of light that comes through the ambient light.所以穿过环境光的光量最小 – In comparison to the powerful laser. – Laser, yeah.– 与强激光相比之下 – 激光 对 – It’s all relative, I suppose. – Yeah, much brighter.– 我认为它都是相对的 – 对 明亮多了 – All right, cool. – Yeah, this is how it works.– 好的 酷 – 这是它工作的原理 So this is a much smaller scale,这次的规模小的多 cause we’re using a higher frame rate capturing a very much smaller amount其实是因为我们正在使用更高的帧速率 of the space and time, essentially.来捕获非常少的空间和时间 – Yes. – All right.– 是的 – 对的 This is the light traveling through the milk vial这是穿过牛奶瓶的光 at 10 trillion frames a second.在每秒10万亿帧下 – This is the reason we came here. – Yeah.– 这是我们来到这里的原因 – 是的 – So cool. – So on the bottle video,– 太酷了 – 所以在穿过瓶子的视频中 the light seemed to have gained the same speed.光看起来有相同的速度 But then you got to remember that the scale of this is much smaller.但是你要记住 这个瓶子要小得多 So this is one millimeter, says here,所以这是光一毫秒传播的长度 is the distance whereas before an entire bottle而之前是瓶子的长度 which showed it we have some recording light这实际上表明我们记录了 traveling through such a small amount of space.光穿过一个小空间 And it’s so slow now that our picosecond因为我们的皮秒是百分之一飞秒 has a decimal place to the hundredth femtosecond.所以光看起来这么慢 That’s blowing my mind for a start.这太让我震撼了 When Peng turned on the laser,当Peng转到激光 I didn’t see anything at all.我看不到任何东西 But now we can actually see how it moves.但现在 我们可以看到光如何移动 On this scale of time,在皮秒的尺度上 if we fired a bullet through this frame,如果我们在这种帧下射出子弹 it would take years to go from one side to the other.它需要花费几年时间穿越这个长度 And the light is just going, biu.但光线就只要“biu”的一下就穿过了 That really puts it into perspective as well, doesn’t it?这样看来感觉未来简直有无限可能 不是吗? I just feel like no human should ever have seen this.我认为我们是第一个看到它的人类 It’s like looking at the base of the universe.这就像在看构成宇宙的基础 I’ve heard that in the future我听说在将来 the CalTech team actually intends to increase the speed加州理工学院的团队打算 up to one quadrillion frames per second.提高到每秒10^12帧率 It’s a bit mind-blowing, to be honest.讲真的 有点让人震撼 We have to leave now and go back to our old,我们现在得回去继续使用 measly hundreds of thousands of frames a second.我们那个每秒几十万帧的破玩意儿了 Measly pathetic hundreds of thousands.少的可怜的几十万 Well, thank you very much, Peng, for showing us your amazing kit.Peng 非常感谢你向我们展示惊人的设备 – Thank you. – Yeah, thanks.– 谢谢你 – 对 谢谢你 – Thank you. – Learned a lot.– 谢谢你 – 学到了很多 Yeah. Well.对 To me, that’s some of the most mind-blowing footage ever.对我来说 这是有史以来见过最震撼的镜头之一 I mean, visually, it’s just a blob我的意思是 表面上 going from left to right.它只是一个斑点从左移到右 But to know that that’s light.但要知道那可是光 I would say it was actually one of the most我想说这是我有史以来 mind-blowing things that we’ve seen.见过最震撼的东西之一 Yeah, I feel very accomplished.我感觉非常成功 Hopefully, you enjoyed watching light move through the airin slow-mo.希望你喜欢用慢镜头看光在空气中传播 Feel free to check out other episodes欢迎浏览《星球慢镜头》其他剧集 from”Planet Slow Mo,” and join us in part two和继续看看我们视频的P2部分 where we’ll be learning a lot more about how this camera works.你可以学到更多这台摄像机的工作原理 You can subscribe, too, if you want.如果你愿意 你也可以订阅支持 We’d appreciate it.我们会万分感激 Still not sure I’ll be able to understand it after part two.看完P2我可能还是理解不了它的工作原理 – We’ll do our best. – All right.-我们会尽力的 -是的

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