Word: 4two
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Dates: during 1960-1969
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...Tyco Laboratories, Inc. of Waltham, Mass., has developed a laser that seems to have the necessary simplicity. Invented by Drs. A. I. Mlavsky and L. B. Griffiths, it is a .02-in. cube of silicon carbide (carborundum), 4Two opposite sides are carefully polished, and electrodes are attached to antfcher two. When a weak direct current of electricity is passed through the cube, a thin line in its center glows with green-blue light. But this is not pure laser light. It is merely ordinary mixed-up light of varying frequencies. When the current passes a critical strength...
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