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590 days

Look ma, no glasses needed for this 3-D TV

3-D TVBBC News
These rely on images for each eye being broadcast one after the other in rapid succession. Filters in the glasses flash on and off in sync with the picture, filtering the correct image to each eye. The brain recombines the image into a 3-D picture.
Cosmic LogNintendo 3DSmany limitationsThe Associated Press

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