How do 3D glasses work?:


These battery-operated glasses sync to your HDTV through an infrared or Bluetooth signal. As you watch, the screen will flash either 120 or 240 frames per second between the left and right eye. The combined effect tricks the brain into believing that what you’re seeing is in 3D. Unfortunately, most glasses only work with a specific TV, so you’ll have to make sure you get the right glasses for yours.

Interestingly, not everyone can perceive 3D on TV. Nearly 1 million people in the U.S. suffer from stereo blindness that prevents them from registering the intended depth of 3D entertainment experiences

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