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  • [Music]

  • Hey it's me, Destin.

  • The idea, here at Smarter Every Day, is to make you smarter.

  • I guess it was 1872, the governor of California

  • tried to solve the age old question:

  • When a horse runs, are all four of its hooves

  • off the ground at any point in transit?

  • Now, artists of the day liked to show images with

  • the horses' feet up front and in back off the ground.

  • So he commissioned a guy named Eadweard Muybridge

  • to create a series of images while the horse was running.

  • Now, Muybridge was pretty sharp, so what he did is he strung some strings out,

  • and had a man ride the horse through the series of strings

  • and each string was associated with a camera.

  • Basically, it was a time of arrival switch.

  • So, this was pretty interesting.

  • Now this is a pulse generator,

  • given to me by acompany in Montana called Quantum Composers.

  • It is amazing. It is a time machine without the flux capacitor, basically.

  • Time for science.

  • What we're gonna do, is we've got a piezoelectric transducer

  • rigged up to this thing on the trigger input.

  • All you have to do is just trigger the thing acoustically and it flashes.

  • And this is programmable down to the 25 picosecond resolution.

  • Here's a 1.8 second flash after... [snaps fingers] the sound.

  • So, it's pretty awesome. Anyway...

  • So what we're gonna do is to create a series of high speed photography images

  • and put them together in a video, just like Muybridge did, back in the day.

  • So, let's do it.

  • Weapons are not toys.

  • What you're about to see was done by educated, experienced

  • personnel in a controlled environment.

  • Be smart.

  • Let's load.

  • Muybridge bullet, take one. Here we go.

  • [Gunshot]

  • [Pulse generator beeping]

  • [Gunshot]

  • [Pulse generator beeping]

  • This is what the video looks like straight up, just as shot.

  • And this is what the video looks like once I correct for the ballistic variance,

  • And go in there and, uh... put them in order, in distance.

  • So, pretty cool.

  • Okay, so some of you are thinking, "that's awesome! No clue what it means."

  • So let me explain.

  • Commercial high speed cameras are very expensive,

  • But what we've done, for repetitive events,

  • we've created one at a fraction of the cost,

  • and at 7 times the resolution of 1080p.

  • So like Muybridge, we've combined simpler technologies

  • to create something that was technologically out of our reach.

  • It's pretty cool.

  • I've got some improvements to this, keep an eye on me.

  • Alright, it is way too late to be playing with guns and time machines,

  • so I gotta go to bed.

  • Um, today we did art, science, math... a little bit of history,

  • we played with guns and cameras.

  • That's pretty awesome. So if you would, subscribe and tell all your friends,

  • I'm sure they'd enjoy this stuff too.

  • I'll put a link down in the info on the video, please click it.

  • The least you could do is check the website out.

  • If you're an engineer, it's really really cool stuff.

  • I got my dad a chicken, for father's day.

  • And I want to show you a pretty interesting method

  • that chickens have to keep their heads stable.

  • You know, in guidance and control you have feedback loops,

  • and so you have to know your position

  • and where your relative motion is going so you can compensate for it,

  • but chickens are really good at this so...

  • I'll show you. Watch his head stay totally stationary

  • as I move his body...

  • Captioning in different languages welcome. Please contact Destin if you can help.



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B1 中級

DIYの高速ビデオカメラ - マイブリッジスタイル - スマートな毎日 5 (DIY High Speed Video Camera - Muybridge Style - Smarter Every Day 5)

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    林宜悉 に公開 2021 年 01 月 14 日