Chances are you’ve seen at least one 3D movie before. Have you ever wondered how they actually work? How is it that by simply putting on a pair of glasses, our eyes are suddenly able to see three-dimensional images on screen? We’ve got the answer for you!
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First of all, the film isn’t made in 3D. Instead, the movie is captured using two lenses placed side by side. The screen displays two separate images, and by wearing the glasses, one image enters your left eye horizontally and the other enters your right eye vertically to create the 3D effect.
Image courtesy of How Stuff Works
Ever tried taking off your glasses in the middle of a 3D movie to find that the images appear fuzzy? That’s because you need the glasses to separate the images. Each scene that you see is projected from two different angles and in two different colours. Although separate images enter each eye, your brain is able to put the images together in order to create the 3D effect.
Eager to learn more about the 3D effect? Check out this video from MIT: