Name: Shockwave Shadows in Ultra Slow Motion (Bullet Schlieren) - Smarter Every Day 203
Uploaded: 2020-03-26T02:26:29.000Z
Duration: 9 min 46 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

Sentences with advanced comparative

to some pretty expensive optical hardware.

Okay, We're going to use a Schlieren Setup

We have a mirror way over there and the way we're doing that

So we're shining that light and it's spreading out;

and as it spreads out it hits this mirror,

and it bounces back and as it bounces back,

and we're cutting off half of that light.

If the air is less dense then light travels

If air is more dense light travels through it slower,

as it goes through different types of air;

I like to guess where the shock waves come from.

The initial one looks like its coming off the bullet itself.

But then later there seems to be this weak one

that I'm guessing that reflected from the plywood table

But then there's this stronger one that comes after that

is that it's coming off the concrete floor,

you can see there's a very week shock wave coming across,

and my guess is that's coming from the muzzle itself.

Okay so we've dropped it to 28 thousand frames per second.

We're trying to get a really good single image.

But to understand exactly what we're looking at

with a bullet and a stick and talk about it here.

So lets imagine that we've got this bullet sitting here

and we've got circles emitting from the front.

As we move this thing watch what happens.

and they kind of relax in the back and they expand, right.

What happens if the velocity at which we move thing,

you'll notice that we this expansion in the back here

and it tapers down and we get this angle.

We get this, I don't know what you'd want to call it, right.

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Shockwave Shadows in Ultra Slow Motion (Bullet Schlieren) - Smarter Every Day 203

recommend

drastically

spread

reflect