Dr. Theodore Maiman studies a ruby crystal in the shape of a cube in a laser. Photo courtesy Bettman/Corbis View Slideshow __1960: __Physicist Theodore Maiman uses a synthetic-ruby crystal to create ...
Light's shadow: Researchers showed that a laser beam can sometimes act like a solid object and cast a shadow that is visible to the naked eye. In the picture, the shadow appears as the horizontal line ...
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