Total internal reflection where the water has a higher index of refraction than the air. Such as when you look into water and the light bends, from the water side, the slight angle cannot exit.
In fairness, the headline "confined to path" begets that you can see red because the light is not being wholly contained.
Water stream acts as an optic fiber. Laser bounces off the surface of the water so it stays inside the stream. Optic fibers used in communication use the same principle, except with a solid material instead of water.
I'm not sure. I suppose it could be scattering due to impurities in the water. TIR depends on the light hitting the boundaries at small angles. Photons scattered by impurities could be directed towards the sides at higher angles. The glass in optical cables is exceptionally pure. And the fibers are very thin which forces the angles to be small. The water stream is massive by comparison so probably not ideal.
kithylin
If you leave it running in the background with sound on while you're in another tab it sounds like a guy taking a really long pee.
mageninja
So what are you going to do with that bucket of lazers?
greggbert
Jarvis, I have an idea for an upgrade to the new implant. Lets get to work.
ElPerroDeLosCinco
You can test this at home, if you stuck a laser pointer in your ass and then pee in a bucket.
SlayerOfGoat
This is how Jesus turned water to wine.
TheVillageGrouch9000
↑ A peek in the bucket would have been cool.
UltimateDelivery
OrkenMork
They have medicine for that problem...
myfriendkaroshi
You need to get that looked at.
DrSharkbite
jqubed
wurstkaesescenario
Go pee before you turn on the sound
unluckyandbored
This is how fiber optic cables work.
AdroitCudgel
MAGA: the conspiracies of communists...
Blackmetalhappiness
A little penicillin should clear that up.
thelatebillstickers
How old is this setup? I haven’t seen a pop bottle like that with the black base and the flange at the top since the 80’s.
iDrawStuff
Thus showing that light can 100% bend under the right circumstances.
Damicske
And how's the data rate?
Nukls
anything special about the water or is it just H²O
nintendolunchbox
Just water.
DePhyler
https://media3.giphy.com/media/v1.Y2lkPWE1NzM3M2U1MTg5YnF5b254cGhtbnJsanExODJ1N21kdGhyemhiNjB0aXp4YzgyciZlcD12MV9naWZzX3NlYXJjaCZjdD1n/KzVuyKpu96qqZWVw70/200w.webp
aducksayswhat
Same principle as fiber optics, total internal reflection
YippeeKayakOB
Wow, that bucket is getting full of laser!
PineappleLoopsBroether
There’s SO MUCH laser in that bucket, I want some!
astrumptsasstrumpet
That's rad!
CanIGetSomeExtraSalt
sex robot STD
Makerofthingsmasherofstuff
https://media1.giphy.com/media/v1.Y2lkPWE1NzM3M2U1eHlkaGl3NHNmbGpmOTZqODd3MWJmZnF0dDM1YmY0d3IxZTZvZ3l0aiZlcD12MV9naWZzX3NlYXJjaCZjdD1n/urvsFBDfR6N32/200w.webp
Whoisthisdoctorwho2000
Fuxk you.... i would have thought of that eventually.... but you ruined it!! You ruined everything!!!... upvote for you.
CanIGetSomeExtraSalt
IGetAllMyFactsFromHere
CanIGetSomeExtraSalt
upgrade to the new model
v
YesWeHaveNoBananasForScale
What does he want?
MayorMcPants
He wants seeeeeeeeeeex
khaoselement
Goddamnit science is cool.
flashums
Ah, It glows when I pee
IlluminaBlade
As long as it's not red.
Arenlor
Just as red as urine, interesting.
jimhotep
When I pee, Doc, it's just blood. All blood.
HandoB4Javert
The basis of the modern internet
Se7enEvil666
Cool now i have to pee.
the3th
and now i can't take a piss unless i'm listening to the Tron soundtrack
Mxlespxles
I am peeing right now
Nanntuckett
Are you still peeing?
HenryLongfellowIII
You can get small lasers that fit in the bore of a firearm. Are people still doing bod mod stuff?
Jaqdakloun
Just pray it's not the same color
DrKonrad
Try putting a laser in the flow and post the results
DeadeicPrints
Huh, I wonder why that happens
BendadickCumabatch
Total internal reflection where the water has a higher index of refraction than the air. Such as when you look into water and the light bends, from the water side, the slight angle cannot exit.
In fairness, the headline "confined to path" begets that you can see red because the light is not being wholly contained.
cousteau
Water stream acts as an optic fiber. Laser bounces off the surface of the water so it stays inside the stream. Optic fibers used in communication use the same principle, except with a solid material instead of water.
nintendolunchbox
The laser is reflecting off the surface of the water like a mirror, bouncing farther down the stream
DeadeicPrints
Interesting. Sometimes I forget light isnt something physical (maybe?) that can just push thru things and do its own stuff.
nintendolunchbox
First time I've seen this was on David Letterman show. He would bring kids on to science experiments
sakm
Laminar flow acting as a fiber optic
pyr0max
so, water optic?
CaptainMustache
Hydroptic?
pyr0max
Nice!
NotAPervert
Waptic
NuclearGradeIrony
That's when the laser's inserted into Cardi B, I think.
EatPieLander
or ... laminar fiber? a possible futuristic Indiana Jones escape ploy
LupusLilium
Can't use laminar fiber to make lamellar armor unfortunately.
JustAName00
I'm going to go with aqua optic.
pyr0max
Aquatic? No, that sounds like an existing word.
NotAllowedToArgueUnlessYouPay
TIR
AdrianDunne
If it were total internal reflection, would light be escaping all down the path of the flow like that?
arocktrucker777
Total internal refraction
NotAllowedToArgueUnlessYouPay
I'm not sure. I suppose it could be scattering due to impurities in the water. TIR depends on the light hitting the boundaries at small angles. Photons scattered by impurities could be directed towards the sides at higher angles. The glass in optical cables is exceptionally pure. And the fibers are very thin which forces the angles to be small. The water stream is massive by comparison so probably not ideal.