Science: Second Sight

The heart of the gadget is a TV picture tube shrunk to the size of a small flashlight. But for the person who straps it on his head, the Hughes Aircraft Company's "Electrocular" does a giant-sized job: it is as efficient as a pair of eyes in the back of the skull. A small, semi-transparent mirror projects in front of the wearer's right eye, reflecting whatever picture the TV tube presents. So close to the eye is the image that it looms large and clear, but Hughes engineers insist that a user quickly learns to look right through the picture when...

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