What Happens to Lasers Underwater? - Smarter Every Day 219

I found this link later that night while fishing. twitter.com/smartereveryday

Your excitement is so contagious! I wish I could go along on these trips once! 😊

These concepts are on the MCAT. So is laminar flow. Destin is helping me study.

So did you make the camera? The light pipe camera? (LPC)

why the moon so red

The majority of people: Woah! That sounds really cool!
Engineer: Woah! That’s acoustically pleasing!
😂😂

dude thats as close as it gets to a light saber so far

The watch he is wearing, what make and model ?

Loved the 'nature walk' reference haha

I have a RGB mousepad with a fiber that runs around the edges of the pad. After watching this video i took it apart and played with it. Now I understand how that works. Thank you Destin! Also I wonder what happens if you light up a stream of laminar flow?

SmarterEveryDay is secretly the smart older brother of Anklespankin.

the slow mo guys have that lens you are talking about, and it makes for epic slow mo shots

Can you do a video on how submarines navigate without colliding?

Laser goggles?
You mean *Tony Stark's glasses*

You need to combine total internal reflection with your favorite, laminar flow. Laminar water will act as a fiber optic. Cool stuff!

The childish way that you guys enjoy yourselves and laugh with your stuff on this video is contagious. great!!

Witchcraft! Dunk them!

EYE RAPE.....😲😵😲😵😵😲😵😲😵😲😲😵😲😵😵😲😵😲

People on shore must have been freakin the heck out!😂😂

Love the safety! One thing he never ever forgets is to be safe! Kudos my friend!

5:44-5:47 That giddy boyish excitement elevates these videos a great deal ;-)

lol that pretty neat

What I just heard was "I'm on a boat"

I sat through the entire video waiting for the alligator.
This disappointed me.

4:55 is it cracked? what cause that reflection @@

This video made me happy😁

i wanna play with words i can't pull from my brain in the last episode, which is "let's sneak up on beaver"

So, how many fish are now blind because you decided to go all Dr. Evil, playing with your fricken lazer beam? At the very least you could have found a snapping turtle or a gar and strapped it to their head.
Love how you have fun with this stuff! Keep it up!

Makes me wanna go night-kayaking.

Proof the earth is round

Take away: "Milf Oil"

8:46

your orb was rolling

Do not disturb the aquatic life by shooting laser at them at night. It might damage their vision forever.

You should make a battle bot

Hay pro tip just dont shine it directly into your eyes & you wont need the F👌GGY glasses fyi

Those fibers turned red when he was switching the thing off 6:25

Amazing video, I love it :)

anybody else see the laser flip out at 4:13

This was an awesome video- acrylic bars and lasers in a kayak at night, with filming equipment. Its adorable seeing an engineer be amazed by TIRf. TIRf has all kinds of amazing properties- laser light is polarized, and so interestingly, with p-polarized incidence, the evanescent e-wave from the surface can "cartwheel" producing elliptical polarization. In microscopy, the fact that the evanescent wave penetration depth can be less than the wavelength of incident light has revolutionized single molecule imaging and tracking, owing to the huge increase in signal to noise. TIRf with immiscible liquids of different refractive indices is another fun thing to try...too bad Destin didn't have a huge drum of vegaetable oil on the kayak....

this was interesting, but i have an even bigger question. does light act the same way when sunlight hits the earths atmosphere?

Answer: Not much, just slowed down a little.
Everything else just happens, when the light goes from one optical medium to another. And even then, only if of different optical density.

7:27 I like the neature walk reference lmao

"everyone knows that if you point a laser under water at 50 degress to the south the reflection of the moon rocks will go up and make a curve"

me: yeah of course. wtf

"There's MILF oil in the water"
I don't want to know what he actually said.

Love the face fuzz

That "good" sounds make me peeing

dudes on boats with lasers

Underwater lasers, amazing.

Did he say milf oil?

If this guy can get laid, there's hope for anybody...

i have a question- does the laser bounce off the water when pointed at the water the way it does when in the water?

That's pretty neat

Y’all should shoot a baseball at 500 mph

Am I the only one who wants a laser now ???

Never heard of milf oil before

2:05 the kayak name is perception..!

Actually love how giddy this gets you. Great vid

how neat is that?

Brighter and dimmer.

8:35 acoustically pleasing... do you mean ASMR?

... it's called refraction

7:19 if you cut some of the Pipe of and stick the laser to the end of it you can make a light saber alike Thing

Are they using goggles because the laser is bad for you or?

I wonder if this is why photons appear as a wave

Should of named this “Dudes on kayaks with lasers” lol

The laser goggles make Destin seem so much older 😂

I’m guessing you’re not in Florida

"Its a light pipe" hahaha thats awsome

Dont blind the fish mate
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