How Virtual Reality Works

What do you think of when you hear the words virtual reality? Do you imagine someone wearing a clunky helmet attached to a computer with a thick cable? Do you think of Neo and Morpheus traipsing about the Matrix?

Look at the defining characteristics of VR, some of the technology used in VR systems, a few of its applications, some concerns about virtual reality and a brief history of the… » Full Story on HowStuffWorks