Word: magnetized
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Dates: during 1960-1969
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...suddenly changes. Wherever light hits the film, the plastic it strikes becomes electrically conductive; the positive and negative charges flow together at that point and cancel each other out. Where no light strikes, the opposite charges remain in place, still pulling toward each other like opposite poles of a magnet...
Permanent magnets seemed permanently limited until Westinghouse Engineer Ray Radus taught them a new trick. Radus began by building an unusually strong magnet, a slice of ceramic material sandwiched between flat plates of soft steel. With the steel focusing its lines of magnetic force in much the same manner that a small lens strengthens a spotlight beam, one of Radus' ceramic sandwiches only an inch square can exert a pull of some 30 lbs. The problem-to make it let go. If a few turns of wire are wrapped around the sandwich, and a small current is sent through...
...proposed center will be a clearing house for federal contracts and procurement, with research aimed at testing materials involved in government contracts. Thus the center would serve as a magnet to attract numerous electronics industries to the area...
...burning oil with it in a chamber that looks like a rocket engine. This produces a flame with a temperature of 5,300° F. Spiked with a little powdered potassium carbonate to increase the ionization, the flaming stream of gas shoots between the poles of a magnet at 3,000 to 4,000 ft. per second, about three times the speed of sound at ordinary temperatures. The plasma cools down considerably as it flows, and a good part of its residual heat is used to raise the temperature of the incoming...
...already lasted through six days of steady use. Dr. Kantrowitz feels sure that in a full-scale plant it will last long enough to make replacement a minor expense. Nor is he worried about the current that is consumed by resistance in the coils of the generator's magnet-a problem that has plagued experimenters in the past. Avco scientists are working on coils made of newly developed superconducting material that loses all electrical resistance when cooled to the temperature of liquid helium. A magnet with such coils can maintain a powerful field while consuming no current...