Researchers have long sought to make computer-generated holograms, but the process has traditionally required a supercomputer to churn through physics simulations, which is time-consuming and can yield less-than-photorealistic results. (Go ahead - check out the holographic dove on your Visa card.) Holograms offer a shifting perspective based on the viewer’s position, and they allow the eye to adjust focal depth to alternately focus on foreground and background. Holograms deliver an exceptional representation of 3D world around us. The solution for better 3D visualization could lie in a 60-year-old technology remade for the digital world: holograms. Nausea and eye strain can result because VR creates an illusion of 3D viewing although the user is in fact staring at a fixed-distance 2D display. Despite years of hype, virtual reality headsets have yet to topple TV or computer screens as the go-to devices for video viewing.
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