Science: Curved Light

At the Pittsburgh meeting of the American Chemical Society last September, Dr. Harry Robert Dittmar of the du Pont Research Laboratories described "Pontalite," a new plastic known chemically as methyl methacrylate polymer, as clear as optical glass, only half as heavy as common glass, flexible, non-shattering (TIME, Sept. 21). Last week du Pont scientists in Manhattan demonstrated that a pretzel shaped length of Pontalite could conduct light, carry it around bends as a cable carries electricity. A flashlight was held close to one end of the twisted plastic tube. The other end...

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