how do 3D movies work, and why are the glasses 2 colors?
In: Technology
To make a movie appear 3D, there needs to be a different picture shown to each eye. Older movies did this with the red/blue tinted glasses. The movie shown on screen would contain two pictures at once – one would be filtered out by the blue lens, and one by the red, so each eye only sees the picture it needs to.
Modern 3D movies do the same thing but with polarized lenses. One only lets through light polarized vertically, and one horizontally.
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