How do 3D glasses work - Sixty Symbols 

+bassisku yeah would totally have watched an hour long version

i know right....my brain train was on a roll then i got sad

"Would've wanted an hour long version" Me too!

It's waaaaay better, when you got nothing at stake :):):)....... been there, done that ;)

Me too handsome

+Cody Moniz There's plenty of lectures on youtube.

Iirc, instead of a single slit that would block the polarized light as you tilt your head, they add a smaller one, forming a cross. Together they still allow the light through, possibly also that meant for your other eye though (see my video).

Yeah, this guy is just bullshiting he way thru this.

My left eye is near sighted, and my right eye is far sighted (or vice versa; I keep forgetting). My brain is able to combine them into pretty clear vision.

And you'r brain is unbelievably clever at combining those to images and recognizing that it is doing that, while touching it's owner's forehead and talking about it.

Dante Sparda What if the brain was the owner and we were the slaves?

I would have thought it would feel more normal

I believe it's run through a filter at the projector.

Stephen I would have thought the screen would mess the polarisation up. Perhaps not. Perhaps it's a special screen.

+jimpozcaner I'm still looking for a definitive answer. I have found that light gets polarized when it hits the ground. Perhaps it's about the angle of the projector? Argh...this should be simple.

I guess it works in the same way as with the mirror, you beam the left eyed light with the polarisation of the right eyes glass, it becomes reflected by the screen and changes it's polarisation, then you see it through the left eye. I can't think of a reason why diffuse reflection should behave differently than a mirror considering polarisation. The only difference between the mirror and the white sheet is the angle of reflection, apart from that the light behaves the same.

IIIIIawesIIIII I s'pose it'd have to be like that.

9 years later

All that would accomplish is giving the person to see either the left eye or right eye. It can't be adapted for one eye.

Actually I'm going to assume you don't see in 3D, your brain is just so used to seeing everything that way that it just attributes the sight to three dimensions, like one would a drawn cube. Ever try driving with one eye closed? Kind of scary.

you dont see 3d with one eye. its just what you are focusing. focusing close, further is blurry. focusing far, closer is blurry. thats how normal camera on ur smartphone works. not 3d. like that would every 2d movie be 3d if you closed one eye while watching it :D

You Can get 3D cues with one functional eye, small head/eye motions, that go un noticed, Are used by the brain to get the info to see 3D. (Oversimplification Alert)

Physics Simplified He did say a full explanation would take an hour.

@@bobbyharper8710 It took me less than an hour to read PSes comment. How do polarized lenses look under a microscope?

@@ceestimmerman9785 Why do you want to know?

@@bobbyharper8710 Because it interests me.

+Adam Heppler I tried it. The black looks to be flickering if I wear it and look in the mirror. If I close my left eye, left eye appears black and right eye looks like sunglasses. And vice versa if I close my right eye. I think I have over 5 3D glasses which I have smuggled from theaters for my colection. Finally they are useful again.

+Adam Heppler i have a twenty-something pair collection of these glasses (i wore them as regular sunglasses for a while; i'm weird like that) and have done this many times; your right eye sees your left eye in the mirror, but your right eye appears blacked out. the opposite is true for your left eye. so you are simultaneously seeing both eyes as completely clear, and completely black, which creates a bizarre shimmering effect, and will give you a pretty bad headache if you look too long. next time you're at a 3d movie, look at one of your buddies who is also wearing the glasses; you'll get the reverse effect. (though it looks pretty much the same with both eyes open.)

+Devamdoshi haha nice job...how to do that?

Shashikant Munnaswami Do what? Smuggle glasses?

+Devamdoshi just kidding...

no one cares if youer at the bethroom

QuantumBraced To a dane it's pretty strange that americans call them bathrooms or restrooms when they are talking about a room with no bath and nowhere to rest ;)

Tobias Knudsen in general we call it a bathroom since we're used to saying that since, in our homes, most bathrooms do have a bath. In public they mark them restrooms because of something from a long time ago im sure but most people would just call it the bathroom

I know Victor, I'm only teasing ;)

QuantumBraced Us Brits also tend to call the thing you sit on "a toilet". lol I think it's just a slightly lazy colloquialism tbh, as a lot of people don't tend to like using the posher terms like "lavatory" and "water closet" / WC. (most Brits probably say "cupboard" instead of "closet" as well.) The "bathroom" thing does sound a tad strange to our ears, because that term is usually reserved only for a room which actually has a bath in it. Languages are weird. lol I'm getting used to a lot of Americanisms, and even find myself using a few at times. Language is evolving all the time, and obviously the Internet has started to merge a lot of languages and slang. One thing I'll never quite get my brain around though, are phrases like "There IS more gameS". Haven't you guys ever heard of the word "are" being used when there is a plural? :p (or the contraction "they're".)

GamePhysics No, Mörör

Erik Akerberg Ø master race ;)

GamePhysics Yeah its övesome

+GamePhysics Mordor

***** Grown up støff!

It's a normal pronunciation if you speak Oirish.