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  • Hey it's me Destin. When my granddad was young he lost an eye

  • playing cowboys and indians, so tonight I'm gonna show you why you should always wear safety glasses

  • or goggles when you're doing an experiment. This isn't very popular

  • because I've been hiding something pretty weird inside my refrigerator for

  • about 5 months.

  • By now you've figured out that I have a wife who tolerates me and I love her very much.

  • One thing that she's been tolerating for the past five months is

  • a set of cow eyeballs that I've been keeping in the refrigerator. I'm now

  • probably the world renowned expert in eyeball juggling.

  • These cow eyeballs are to make a humorous video, and by

  • humorous I don't mean funny. Vitreous humor is a liquid that is inside

  • of your eye and when you were younger you looked up at the sky and you had that

  • nice monochromatic background and a real small pupil cause it was bright, and you saw these things

  • floating around in your eye. Those are what I call floaties. This is your eyeball.

  • Now you'll notice there's fluid on the inside. When you rotate your eyeball

  • the fluid tends to stay in the same position due to it's inertia.

  • So even though the floater's on the inside, in this case fish,

  • he doesn't move because the fluid isn't moving. That's why when you see

  • a floater when you're looking at the sun it's so hard to track because it moves at some erratic

  • pattern based on the fluid velocity, not necessarily the eyeball velocity.

  • We have goggles and there's no stopping us now.

  • So I've got a Phantom v10 high speed camera. It's setup using a technique

  • called the long flash technique. So here's a flash, and

  • I've aligned on a cow eyeball using a laser

  • that is put in the muzzle of the rifle. We're using this

  • piezzo electric transducer to trigger

  • a quantum composer pulse generator to trigger it at the proper time

  • to illuminate and give us some really cool footage.

  • That looks weird, but I like it.

  • Bullet vs cow eye... [bang]

  • Alright here's the bullet. You can see a little smoke trail behind it.

  • Urgh. That's pretty nasty. Oh that's cool.

  • It kind of blew up but the musculature on the outside held it together.

  • So what happens here, it actually hasn't exited yet, so the bullet

  • is inside the eyeball.

  • Oh man, total destruction. And so that's what happens in less than a millisecond.

  • This time the lens came out and you can see around the edges of it where the ciliary

  • body connects.

  • I might just pop the end off there... yeah.

  • I forgot to trigger the camera.

  • But, I did make a cool spiral galaxy out of vitreous humor.

  • Oh you gotta see this, the lens popped out.

  • If I was Bear Grylls I'd eat this. It all stayed together.

  • Oh look at that. Alright this thing is called the ciliary body. It's just behind the lens.

  • Oh man. If this doesn't burn vitreous

  • humor into your mind, I don't know what will.

  • Take away. Always wear eye protection. People will make fun of you, but be smarter than them.

  • So I hope you found my video humorous. Ahh see what I did there?

  • If you did please subscribe, and also consider

  • this other channel they're called the Slomoguys. They're in the UK, they do cool stuff too.

  • They have Phantoms and they do really neat experiments. They just talk a little funny.

  • But anyways I hope you're getting Smarter Every Day, and tell your friends.

  • We'll see you next week.

  • [ Captions by Andrew Jackson ] captionsbyandrew.wordpress.com

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

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B2 eyeball fluid cow humorous eye trigger

Eyeballs vs. Bullets in SlowMo - Smarter Every Day 26

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    Furong Lai posted on 2012/12/16
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