Watch Glasses-Free 3D on YouTube
Remember those Magic Eye posters from the '90s? Now there's a way to use the "cross-eyed" method to watch glasses-free 3D videos on YouTube. Says Slate about the method, "The trick can approach a hallucinatory experience, giving the sense of a diorama seen through a wormhole. It's not an 'immersive' experience, in the way of giant-screen IMAX, but it’s an intensely personal and absorbing one, with the world around you fuzzing away into the background."