Bending the light - physics experiment

[appleheadchris76]

Cool physics video

[BeatDemon08]

The lights not bending, its reflecting.. :). Sorry i just wanted to be apart the gang.. this is a gang right? jk.

[digitalpiggy193]

50% of the people that come on this video: this isn't bending the light. it's titty inferno reflection. i did not read the video description. admire my basic science information on the intrawebz.

[EvilDarkMario1995]

Love how 80% of the comments were about how this "isn't light bending". Jeez, it's just a title.

Anyway, neat trick you got there. I remember doin' that at school with a couple mates of mine back when science was fun and not a chore.

[johnarka]

it's not bending of light

it's bending of water because of gravity

[S00rabh]

Just like optical fiber.

[TheJefedesapuka]

the same thing happens with the optical fiber

[kt8w4356]

jjajajaj el meado de hulk xD

[Galatorg]

Wow, that's awesome, I've never realized that. The coolest thing that I find about it is that it's water and that it's gravity fed (what if it had high pressure behind it?). I wonder what it could be used for, very cool.

[Dari1058]

thank man this is so cool

[nextblain]

i want my wee wee to laser pee lyk that

[tremault]

you should rename the video. putting a correction in your description is not good enough.

[wilsonleongyunsiong]

The velocity of the light particle, photon, in medium, depends on the density and refractive index of an medium. If the density of the medium is too dense, the speed of the photon will decreased and the angle between incident and refracted ray will affected. This is called the principle of reversibility and laws of refraction. Sorry if my explanation is not well. If you have some information need to add, just share your knowledge and explanation about this phenomena. Thx.

[wilsonleongyunsiong]

Just like the fiber optics, when we see the light through the fiber optics, the light will follow the fiber optics' direction.

[anandjhawar1]

nice.....



[chronosifter]

This is not bending light, it is: total internal reflection. It occurs when the light vector is at too large of an angle away from the surface normal at point of contact to pass through the boundary. Different mediums have different refractive indices, which is what determines too large of an angle. Calculating those at each point of contact is surprisingly simple, in computer graphics we use it for both reflection and refraction in transparent materials (liquids, glass, etc...).

[coolphysicsvideos]

@chronosifter In video description you will find "Total internal reflection". It's been there since june 2009

[Totalnoobster]

@coolphysicsvideos Youtubers, ignoring video descriptions since 2009.

[bren102331]

@chronosifter lol TO MANY WORDS AHHH lol jk jk but good observation

[yporoftotis]

@chronosifter

science is more attractive when using catchy titles ex "black holes" , "big bang", "metamaterials"

For this one we could also use " a liquid optical fiber"

[LilMsLolli]

@chronosifter id like to do this for my science fair.. what are the variables?

[str8out]

Not bending, try "inner reflection" :)

[coolphysicsvideos]

@str8out In video description you will find "Total internal reflection". It's been there since june 2009

[manivaryou]

wowwwwwww

[manivaryou]

wowwwwww



[LhiannXD]

what is that ? a laser ?

[Ramiromasters]

Laser water fountain!

[lovelplants]

i think reflecting is when you point a light to a mirror or something...

this bending experiment is very good but there's no audio.. 

[94saq94]

that's how fountains have colors

[pawndominance1]

thats reflecting, not bending :P

[coolphysicsvideos]

@pawndominance1 In video description you will find "Total internal reflection". It's been there since june 2009

[pwnzerama]

thats actually really freaking cool. Great job!

[aprox23]

You guys ever heard of a rainbow?

[3xxiled]

@aprox23 AHaha you just made my day!

[aleemjang]

poor man's fiber optics. gives me an idea !

[surendersinghchouhan]

it's a really amazing thing for seeing......

[vanlandeghemvince]

i have to pee

[TheJadekungfu]

Nice explanation of refraction, I could show this to my students.

[2JAMMY]

Interesting!... never seen that before - now I'm gonna go & read something about how this can work. Prolly 30 seconds then some head-screwing mathematical formulaes & einsteins bending theories, then naturally on to something else. Life is funny :):):)

[1SMF0F]

No its not fiber optics, light getsreflected inside water easier then it does in air.

[MrPeeepe]

Can water totally reflect light? Which common meterials can?

[paintballkiller666]

@MrPeeepe no...not totally and a common mirror ;)

[Nitrozzy7]

That explains somehow how the light travels through space...

[Ryalnotch]

Thats not bending light...

[besterich277]

Awsome! @Casadosmongos What you must do; Go fuck yourself, learn about physics/light/science, fuck your mom, suck your fathers dick, go dump your boyfriend you gay bastard.

[mentallogic]

Congratulations, you now have skin cancer.

[archaedemos]

nice!

[invaderanthony1]

woah, woah, woah. and that's all i could say was woah, woah..

[Casadosmongos]

GAY AND FAKE! :DDDDDDDD

[pottyshit]

@Casadosmongos Your dad used a fake condom. srsly how is that fake?

[AndyTzan]

Me : Mommy , mommy

mom : What soon??!

Me : Look I am peeing green!

[ilovegursheen]

my pee is in green color

[koffeekage]

holy hell! Now i know how to make a youtube video where someone has radioactive piss!

[farhan3d]

@koffeekage How to F are you going to position the light source you moron..

[koffeekage]

@farhan3d is there something wrong with you? there would be a way im sure this setup isnt difficult. quit trolling guy.

[armandux1productions]

@koffeekage Why do people refer something as radioactive if they are green ? *facepalm* This days Civilization...

[koffeekage]

@armandux1productions i think it comes from the early 1900s when companies started making glow in the dark clocks using radium based paints. the radioactive materials caused illness in long time employees.

[goatnamese]

That's the Incredible Hulk's pee

[alewo111]

well i guess you could say you are bending the straight path of the laser pointero_0

[Bigpond999]

My dad has one

[Gaafaroof]

thats refraction not bending of light thats the same idea as an optical fiber

[l13553s]

Does its have to be a green colored laser or can we use a red colored one????

[MrImmortalCombat]

@l13553s fiber optics will work with any light youll probably want to see it for this

[xScaredMomentsx]

Did you know girls have more stable hands then guys.................

[sp00nman88]

@xScaredMomentsx yeah but guys' fingers are more stable then girlz's

hehe :P

[go0504333770]

fuck you

[TCupUK]

How can something that bends be bent?

It is because light is bending that it reflects of the wall of the water stream.

Still a cool video and a great effect +1

[SuperKayjohn]

WOW!! I Love it...

[TheDaftpunk02]

We already know how to bend light fiber optics we can bend light around corners and stuff like that

[needtobelazy]

@TheDaftpunk02 yeah but not in a Open case.

[lovychumber007]

awsum videooooo..................



[GeeksRus95]

green piss, nice :P

[Wesley683]

@GeeksRus95 piss is green lol

[crankmeup1]

Create a lazor bomb for war using science no more guns or maybe a little bit of guns

[drewsisely]

You are bending water then shining light through it........ Have you ever heard of fiber optics?

[AZIlluminati08]

anyone know what fiber optics are?

[123simonresok123]

steady aim HaX0R

[Rahpido]

The light only follows it because the light relfecting in the water following the stream.

[arsenalskate123]

i knew light bended when it hits h20 but i never knew about this simple experiment. thanks!

[eeqrock]

i read in some quantum physics article that bending a light require a huge amount of mass.. like "star" huge.. and, if lights is bended because of that mass, than time will bend too, that's what they come up with.. if that was true, then this is not really bending a light.. imagine creating a time machine with a bottle of water.. :)

[nelsongast1]

brilliant

[nybotheveg]

not bending light, just bending water with light moving through it

[admiralct]

fiber optics

[azezrtyuuiopqsdfghjk]

@admiralct No fiber optcs, It's water optics

[admiralct]

@azezrtyuuiopqsdfghjk precisely, how do you log in with that screen name? so jumbled.

[james8839]

thats awsome.



[adityasahu96]

you know THAT BENDING LIGHT REQUIRE HUGE AMOUNT OF ENERGY

[iisparkles01]

@adityasahu96 YOU KNOW THAT IT DOESNT..

[amsd1231]

@adityasahu96 bending light require huge amount of mass... so I guess you are right.

[captainchu]

@RunNJump101 there is refraction when it goes off from the water into the surrounding air, but as long as it's in the water it should not be refraction...im tired of this video...plz no more responses!!! D:

[TehcnoBoy96]

It's called total light refracion , it appears the the angle of incidence is larger than 49° (for water) :)

[fabdlnltc]

Nice for a summer party! :D

[zakkah93]

Very cool experiment, thanks.

[NeoFighterX]

go on! Steady Shot Pro!

[MCmaxim777]

uh... this is called refraction of light

[SpeckFreak]

HULK!



[ynewbee]

Can u do the same with a speeding bullet?

[raulc97]

You should bend time and put it on Youtube as well! :D

[TheAlbHunter]

Green Lantern peeing

[prankmakers95]

it just works like an mirror...

[gspradoneto]

We should try condutcting optic signals throu water conduits =P Much cheaper than optic fibers

[cenmoopie]

bull shit someone is pointing another light

[RokkerBoyy]

this isnt physics, if anything its classifiable as fiber optics, seeing as it works the same way as optical fiber

[CakesnakeFilms]

@RokkerBoyy fiber optics is a sub group of the study of light, the study of light is a sub group of physics.

[Metalllama60]

....a tunnel of mirrors as someone else said (it was a good decription of what happens :P)

hope this clarifies a bit

[Metalllama60]

if light shines from a less "optically dense" (light has an easier time moving through the material) to a more "optically dense" material at an angle below the "critical angle" (based on the index of refraction of both materials), the light will simply reflect and not go through the second material (water in this case). The phenomenon is called total internal reflection as stated in the description and as long as the light stays below the critical angle while bouncing around, it acts like...

[OnnomonnomonnO]

LOOOOL :) very good idea

[MrPur3d]

do i need a green laser for this? or can i do it with just a normal laser?

[RokkerBoyy]

@MrPur3d you dont need a laser, you can just us a flashlight, lasers give better colors tho

[MegaTimothy1993]

yeah and even a writeup

[jaffey2006]

The parabolic curve cause from gravity allows total internal refelction. I'm not sure if this is water though.

[RokkerBoyy]

@jaffey2006 it should be, it definitely works with water at least

[akhilanugrah]

the water flowin acts like a fiber optic cable... thts it..

[ayinozendy]

Can someone try this using a hose? a regular hose or a clear hose (if there ever is one)

Then combine it with this ghetto tech watch?v=_zMAWztZ6TI

[RokkerBoyy]

@ayinozendy not possible seeing as that relies on the sun's light, and you need it to be fairly dark and the light must be pretty concentrated for this to work with this expirament, also, you need light

[lauris15151]

its refracting, basically coz water is more dense than air.

[22jinevil]

he have three hands amazing physics

[xevious2501]

technically that is *not* light bending at all although quick rational would lead a person to think so. actually whats happening here is the laser light being reflected inside the stream of water. remember the surface of water is refeclective both on top and below the surface(you commonly see underside reflection in darkly lit environments like a fishtank. This exeperiment is the equivalent of ahallway covered in mirrors with a lite at one end a 90 degree bank and you seing the light at op end

[thecozmicman]

will it work only with lasers and not with some powerful leds?

[jpattzlovevampz]

thanks for this video..it really helped me a lot...cause this is what my partner and I presented to our Physics teacher..:)

[13098519]

Black holes bend light too... But in a more extreme way

[heteroskedasticity]

Eddington's exhausting effort to prove Einstein's general relativity theory was needless, all they needed was a bottle full of water and a laser beam:P

[xHeatTec]

this is "Total Internal Reflection" called in physics

[88888888767]

Craig David has a tap like that apparently, that would be so awesome, colored water effect.

[thatdude2468]

thats kinda cool. ima use that for a prank i just gota figure out how. >)

[ygoxx]

the laser has to be green?



[tepanec]

two lasers

[92palani92]

looks like alian water bottle pees on your hand :)

[Moonzania]

does it work with the normal lazer? (red one)

[42Ladyhawk42]

me to:-)

[st1wPNV]

im gona try that

[horbergaren]

man i am so thirsty now

[captainchu]

its not really "bending" light. water is reflective...imagine a tunnel of mirrors...that's what the stream acts like, its just light being reflected.

[belley669]

@captainchu yeah that is what i guess, but its crazy

[tuPHwUn]

@captainchu

Google "refraction"

[captainchu]

@tuPHwUn you could just reply with a normal less sarcastic comment.I guess youre trying to say that this is refraction. I'm not saying you're wrong. It's right. except we are not really changing mediums, water all throughout. Sure a little light leaves during the tunnel since water is transparent and you see a really bright light at the end because most is reflected to the end and that's where refraction is mostly noticeable which is why you see a green "aura" its shooting off in all directions

[tuPHwUn]

@captainchu

Two words

[predmaster]

@captainchu

Just like the light in the optical fiber

[some1sweetlyspecial]

@captainchu lol its still cool tho



[DreamyMr]

@captainchu You mean refracted right?

[captainchu]

@DreamyMr it's like a tunnel of mirrors, of course there's refraction when light changes mediums from water to air. I didn't feel the need to point it out, but thanks :)

[CarlyleSpeaks]

@captainchu Is that not semantics though? Is reflection not bending essentially? You have one straight beem of light that does not go through or get destroyed by a mirror. Does it not then "bend" in order to "reflect" and go in another direction? Now if light had no length and was just a singular point, then I could see you saying it changes direction not bends. However, light has length so at one point it will be V shaped as it reflects. Can you not say it is bent at this point?

[PlatSoul]

hand cancer detected

[Mrsadgirl99]

nc wow!!!

[egerteknas]

TIR

[tijira1]

lol i did this in science class and this one kid is like...Whoa....the light is liquid and stuff.... and was like ... LMAO

[PriorBrian]

2 people will reduce the quality of the human gene pool!

[nohelp]

Chantelle says that this is cool!

[radiationcerenkov]

Interesting experiment. Then again, the title is a little bit inapporpriate. Bending of light is, as most of you know, a miracle of gravity and has nothing to do with this experiment technically. This phenomenon is due to total internal reflection and not because light rays are bending.

[morpher44]

does it work the other direction. If the laser was beamed into the falling water from below, would the light bend back up to the source?

[ntomata0002]

@morpher44 Yes dude, it works like an optical fiber.

[hxasmirl]

this means, one day we'll make invisibility possible

[TheDoveLady]

Look at any bright light with your eyes almost closed except open just a crack, and you will see light does a lot of different things. It's flexible, your eyes even can move it, and it forms intricate patterns. It is always moving and I think it is every bit of it conscious. It's amazing, light is. I read "The Secret of Light" on my channel. Might want to check it out. It's a book written by Walter Russell. All is Light. Best we understand all we can about it.

[dieugrec71]

YOU WITCH



[epicorange747]

that amazing nice vid thumbs up !!!!!!!

[TheArvinian01]

if i saw this earlier, i might used this on my science project, but too late

[kalmoro]

hi nice video

[juanmora19910209]

If you bend light don't you become invisible? Or if you find a material that doesn't reflect light?

[jonasbacklund]

@juanmora19910209 no, you can't become totally invisible, you can only bend light so that you are percieved from a different spot, like this video demonstrates.. if you hold your hand straight from the lasers intended path, you can't see, but move your hand and there it is..

[juanmora19910209]

@jonasbacklund No, YOU can't become totally invisible. Talk to me in the future when it's totes ma gotes possible.

[tyler114050]

how is the water coming out

[Yforzayo02]

@tyler114050 a hole... in the bottle....

[KinngLion]

This is no optical fiber, is water, but it does work as the fiber. Also, this phenomenom is called TOTAL INTERNAL REFLECTION, and it's caused because the laser is inclined so it reaches the LIMIT ANGLE. Therefore, the laser doens't pass through the water trickle (refraction), as it works as a mirror, and keeps reflecting inside it forever. ;D

I just learned this at school^^

[yumetallica]

Hey, I have exactly the same laser, =D

[jaymcd84]

just like tiny mirrors in liquid form. bending light takes an enormous amount of gravity like a black hole or a large mass. fiber optics dont bend light they refract it.

[TheMeansardine]

ching chang fliguty wik chass joop jap joopadoop !

[akkudakkupl]

there is a better optics experiment :D a long vessel of water that you have just inserted salt in. The salt that is dissipating in the water will bend the light in to a arc :-)

[ashifasheikh06]

i think it is called total internal reflection

[vzgsxr]

Not exactly bending light, its more like its reflecting down the stream onto ur hand..

[matthewlorXIII]

next...the suit filled with water for the prototype of the first invisibility suit!

[MoreHatred1]

that's awsome:) the water acts like a optical fibre and bends the light through the water jet :) cool:)

[n0b0dy241]

well it seems posible but whit a really powerful torch

[ro33emo]

hmm dude.. can u show me how u do this coz when i do it at home.. the results aint the same..thx fr the explainations

[EntanglementSatan]

Bottle's green light emitting piss.

great.

[whotookmynickkokokai]

that is the predator blood