How Do Virtual Reality Headsets Work?


Microsoft surprised the world Wednesday with a futuristic headset that will beam 3D images right into users’ retinas. This eye-popping technology certainly looks like it’s on the cutting edge, but actually, the biggest part of it — virtual reality — has been around for years. No, I’m not talking about 1995’s Nintendo Virtual Boy, I’m talking about the underlying science of virtual reality, originally started at NASA 25 years ago.
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