Make An Invisibility Cloak Using Lenses! - Experiment

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Download the song from this video:
Song Name: Soul Switch
- itunes: itunes.apple.com/us/album/sou...
- Amazon: www.amazon.com/Soul-Switch-Sin...
All of the items necessary to create this project can be found at:
www.edmundoptics.com
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This project was inspired by the Rochester Cloak experiment created by Professor John Howell and graduate student Joseph Choi. Be sure to visit their page to learn more about the experiment:
www.rochester.edu/newscenter/w...
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This is a really simple yet amazing project. It uses 4 lenses to control light in such a way that it renders an object invisible. When the light enters the first lens, it flips the image upside down. The second lens sends the light straight into the 3rd lens. The 3rd lens focuses the light into a point about 3 inches past the lens. Since the light is focused into a point, any object placed around that point cannot be seen when looking through the lenses. The light is essentially bending around the object. Once the light hits the point just past the 3rd lens, it then flips back right side up. This allows the background image to pass through all of the lenses without warping or being seen as upside down.

[@TheParablade]

I didn't know what to say, so heres a waffle recipe: 2 eggs2 cups all-purpose flour1 3/4 cups milk1/2 cup vegetable oil1 tablespoon white sugar4 teaspoons baking powder1/4 teaspoon salt1/2 teaspoon vanilla extractYou can keep the batter covered in the fridge for up to a week. Just be sure to whisk well before using again. You may also use whole wheat flour for this recipe.

[@SuperSpeece]

Thank you

[@PlanetDanJT]

Thanks man

[@SuperSpeece]

You have forever changed my view on waffles

[@SuperSpeece]

you just had to ruin our moment didn`t you

[@andyandeloda]

aismartie14 To be fair, he never said it was his recipe.

[@AliciaBurrito]

Aw, I was hoping he would shine the laser through the lenses =(

[@brusspup]

Blaziken584 I did have footage of that, but it wasn't that impressive so I left it out. The only laser I had has such a narrow beam, that it wasn't affected by the lenses.

[@TheOzarkWizard]

brusspup once you get a better laser you should make a second video

[@AliciaBurrito]

brusspup Oh, that's disappointing. Thanks for letting me know though c=

[@stimproid]

brusspup Would multiple parallel lasers of different color shining through the lenses allow us to see the effect?

[@AliciaBurrito]

Flippy No, Brusspup is not a he.

[@Terrum]

Brusspup may only upload every few months, but each time they do, it's always an insane surprise to see what incredible, unique illusions they come up with. So unique compared to many other channels!

[@raincloudgames8242]

Based pony

[@6-dpegasus425]

Awesome pfp haha

[@TransparentLabyrinth]

Very cool as usual, Brusspup!

[@greeenpro2009]

Another awesome project! Great job.

[@smaakjeks]

Elegant experiment! Very cool!

[@matobozo666]

Finally another video! And a cool one too!

[@krisb853]

It is magnifying the bottom half of the view "port." and that is what you see. Notice how the bottom half was never covered at all

[@brusspup]

Kris8530 Actually the bottom half is exactly like the top half. The center is the only area where the object will appear. So I tried not to pass the center. It was cool to use the laser though because the beam is so thin ..I could get it so close to the middle without it appearing through the lenses.

[@mikosoft]

explanation is in the description. He doesn't xover bottom in the first half of the video but he does it in second. He never passes through center though because that's where the light rays are concentrated. If he would pass trough center he would cover the whole view in the lens.

[@arcturian6939]

brusspup when i saw the laser i was really hoping you were gonna put it through the lenses so we could see the light bending... so were a lot of other people.

[@BaTpyLLlKa]

This is a really simple yet amazing project. It uses 4 lenses to control light in such a way that it renders an object invisible. When the light enters the first lens, it flips the image upside down. The second lens sends the light straight into the 3rd lens. The 3rd lens focuses the light into a point about 3 inches past the lens. Since the light is focused into a point, any object placed around that point cannot be seen when looking through the lenses. The light is essentially bending around the object. Once the light hits the point just past the 3rd lens, it then flips back right side up. This allows the background image to pass through all of the lenses without warping or being seen as upside down.

[@Solroneous_Data]

did you just copy the description?.... that's cheap....

[@GamingPhysics526]

S0lr3n No. brusspup totally copied BaTpyLLlKa's description!

[@TricksWithClaudia]

Woooow! That's incredible! Very nice !

[@lucaschiavoni]

very amazing video.. and it blows my mind!

[@Nichoalsziv]

It so good when you release a video its of such high quality!

[@Matezeka]

It's a principle developed at the University of Rochester NY earlier this year. (search for "rochester cloak" ) The trick is to not cover the center of the Lens in the middle, because that's the focus point, where the light is "bend through". ;) But really cool that he build it himself, I would have loved to see the beam path of the laser through the lenses in the haze... :) Welll... just saw that it's all explained in the description. 0:D

[@junkman226]

*she ;)

[@disuko]

Great job on getting onto outrageous acts of science!

[@zioxei]

You're a wizard, Harry.

[@mangosquirrel]

+zioxei You're a hairy wizard.

[@IlyaButenko]

That's a simple, but totally cool experiment!

[@rawdeal271]

Missed your amazing vids.

[@jayfulf]

Before commenting, read the description... Particularly if you: - have a question - are trying to describe how it works for no reason at all - think you know how it works - want to know the song - haven't looked at the description

[@SharonDraws]

The last one was funny lolll

[@QuadFilmProduktion]

Amazing FX skills!

[@FreddyGodoyPY]

I don't know who you are or where you from but I love you guys, thanks for making your awesome, interesting and very good quality videos!

[@Yeraus]

You're the master when it comes to detect real life bugs, thanks for this awesome video!

[@Lucky6208]

I love this channel

[@TapL]

What would it look like if you slowly move your hands towards the lenses? Would your hand be visible then slowly vanish?

[@sufiyanahmed6113]

I love your videos...❤

[@legendary2058]

HI TAPL

[@KalzEdits]

Basically yes

[@ScheherazOdd]

A new vid just in time for my birthday! *squee!* (j/k) Thanks brusspup ! As always, awesome video, damn good music, and Rider making a cameo! Couldn't ask for more! Isn't this based on the same principle that the military is doing to try to 'cloak' things like tanks?

[@EGOS42]

Another fantastic illusion!

[@HasanFadol]

That was awesome 😍😍👍.*I love it*

[@vongolaxp5420]

The Genius comes back!

[@JohnSkene12]

Takes us one step closer to invisibility

[@lepeshka3569]

Amazing video editing skills

[@cometcollector1264]

The classic brusspup song

[@457zim]

I'm really digging the "Clubbed To Death" drum beat in the song!

[@joshrussell4242]

1:05 "There is no spoon"

[@fep_ptcp883]

yeah!

[@RoulinBrooks]

The hand model in these videos have immaculate cuticle work. Very impressive. And the illusion is amazing, too.

[@jamiehurricane]

Grats you invented the periscope

[@jlfanargen]

The wizard of KZbin returns

[@ifaber68]

Fantastic!!!

[@TheTechAdmin]

0:48 The answer is in this scene with the knife. You see a 2 inch hole to look through thinking you see all through it. However, the combination of the 4 lenses creates a focal point similar to a magnifying glass would with the sun to light something on fire. The focal point is about 4 cm below the very center of the circle. Notice the knife never passes that point, because if it did, it would be seen.

[@jjadenn]

Oh I watched something like this on TV and I loved it

[@AlibabaBilimEvi]

cool experiment

[@ThatFoxxoLeo]

SO FRIGGIN' COOL

[@Zeaxeify]

I'm guessing a magnifying lens in front of the object and the last one the same lease turned around, so when you are behind the last one it looks normal, but in front of the last one it magnifies the center so it looks like nothing is there, which is why they never put any objects directly in the center, just slightly above and below the magnifying point

[@DeltaCity2K]

Dracula-esque wizardry! Well played, sir.

[@pmyou2]

Ah! That is why the object was never moved past the middle point between the 3rd and 4th lenses! Brilliant! Simple, elegant and brilliant!

[@AmazingDeFacto]

Great video

[@illdie314]

THIS IS SO FREAKING COOL

[@user-gy1zx7ff3g]

Wow amazing!

[@RedRose-mr8tv]

Thank you.

[@apogeecreativitee7596]

Wow that's nuts!

[@z4ck1gr33n]

You're a wizard Harry

[@BluEProductionsNet]

It's not only bending light, but also my mind

[@metashrew]

Now we can make an invisibility cloak from Harry Potter!...with a gazilion lenses

[@Pablorovirita]

1:00 There is no spoon, Neo...

[@AkifMehmetArslan]

Awesome!

[@SyntekkTeam]

Wow that's really cool. I've never heard of this effect before. What happens when you slowly move you hand from the visible to invisible range?

[@lobo_]

Amazing!!!

[@mojowoodward]

This is so cool

[@jackp4287]

Wow this is amazing I love this you are gooood

[@PLazz257]

I really love the audio! And that camera must cost a fortune

[@KababKnife]

lol 1:00 there is no spoon.

[@YipYapYoup]

What does that even mean? He's holding the fucking spoon in his hand.

[@BlackVectom]

***** It's a movie reference

[@systemcrash1969]

YipYapYoup goo.gl/nlusMq

[@videogyar2]

The spoon is a lie!

[@HampterLover985]

Do not try and bend the spoon. That's impossible. Instead... only try to realize the truth. What truth? There is no spoon. There is no spoon? Then you'll see, that it is not the spoon that bends, it is only yourself.

[@bboyrughbrn]

Very Amazing but i have a question. Are you having to position the camera at a certain angle or distance to be able to see this effect?..kind of like some laptops or tvs if you sit in the wrong position the view is obstructed..

[@pornstarnarek]

life needs an update

[@Reddblue]

We're getting there

[@halolime117]

Really cool and cute cat :3

[@gerardtayeb1971]

Hello. Could you please tell me which lenses you have used? They are clearly not the same as in the original publication (achromatic doublets with 200 and 75 mm focals, which give a very cumbersome system). I have to show this experiment soon, and given the price of the price of the doublets, it is better to buy the good ones ! Thanks

[@user-xb6pk7li7u]

God bless you

[@BobbyNewman_1]

That was amazing

[@sivabarathi71]

awesome!

[@nicoman360]

Im done. He made a black hole that will destroy us all.

[@oldaccountthatidontuseanymore]

Nice!

[@chipzzy0]

Hey, amazing job! I have a question, how come your other hand doesn't become invisible also through the lenses? Because the objects do and your hand goes right near them? Im sorry if this is a stupid question, I don't know much on this topic and am just curious, Thanks! -Greg

[@ppcollins01]

Please can you explain the Physics / optics of this, even give the journal reference or something.

[@dome7963]

Very nice

[@prabhxsingh]

Wow that is cool and I saw one of your videos on Outrages Acts Of Science the show that comes on Science channel.

[@ZionDR1]

Don't mix cats with science, bad things can happen. Remember Schrodinger's Cat ?

Cool!

[@brandonsato5121]

bro next gen military tech

[@dapvarandas]

It is so CRAZY!!!

[@TheProjectMineCrafts]

I dont know if this is right but I have a guess. He's using the other glasses to make the first glass ZOOM more and by that it zooms so much that you cant see the ruler through the first one. And when he puts something infront of the third glass(Not in the center of it) it wont be possible to see and then he puts his hand behind the fourth glass.

[@aghaanantyab]

i want to see the bend of the light... could you shoot a laser through the lens so we can see the movement of the light from right side

[@ARCsanz97]

I love the music

[@NE0KRATOS]

Could you give us the exact objects you bought? I get lost on that website, too many things.

[@Awesome5]

SUBSCRIBED!

[@navroze2684]

WOAH! COOL!

[@kenny4yourthots]

Dude, I've heard this song a bunch of times (mostly cuz it's on my iPod xD) you should make some more music!

[@johanfritz0224]

AWESOME

[@remyche8768]

Is this like the same as looking through a cardboard tube with one eye and holding your other hand against the tube to make it look as if you have a hole in your hand? Just more advanced I Really enjoy your work, keep it up 😃

[@duduguimaraes1297]

Those lenses of that little rochester cloak of what materials are they made of?

[@adibyusof3036]

Hiii brusspup , what an amazing demonstration! Can I know what type of lenses did you use? Are those lenses convex lenses with the exactly same focal length? Or did you use concave lens or smthg? Thank youuu :)

[@techandtrains101]

In the description.

[@EduMiguel16]

are the hand and knife at almost the same distance? and why we don't see the hand at 1:41 since we can see the hand at 0:40 for example? is it because the hand is closer to the lens? and if there is a third object? >.

[@spluad]

Wow my brain hurts. Looks incredible.

[@DILIKUTTAN123]

I request you on behalf of me and others to upload a video which demonstrates the path of light through the lenses by a lazer showing how light bends..thank you

[@imaginative-monkey]

brusspup This is amazing! thank you! It would be great if you could explain the optics behind this, even just with a slide. :-)

[@phiteonn3541]

Excellent! We just need to now invent some glasses with four beer bottle lenses and not only will your face dissapear but also what you are looking at, Joking aside, where will all this technology end? It's all good stuff in the right hands

[@Eikomaniac]

What happens if you put split a cube half way through the 3-inch mark? Would you see half the cube or all of it? Or maybe even something else?

[@greenhornet8262]

This was the invisible woman’s power in the fantastic four. She was never actually invisible. She bent light to make sure appear invisible

[@StevieValverde]

What time did I wait for this video?

[@TheRuben654]

Please make a follow up video to this where you point the laser through the lenses!

[@rixu7595]

incredible

[@poofkaboom]

Cool.

[@christianc7718]

Does the area of cloaking have to be right behind the third lense? can it be somewhere else?