Word: coils
(lookup in dictionary)
(lookup stats)
Dates: during 1940-1949
Sort By: most recent first
(reverse)
...permanently magnetized when an electrical current flows through it. Hence, in the core of a distributor coil, it allows a high spark output at all engine speeds. This solves a problem which has troubled engineers as high-speed motors have demanded ever higher spark efficiency...
Stick your hand into a powerful electric induction coil. Nothing happens. Then stick a steel rod into it-the metal becomes red hot almost at once. This phenomenon is the basis of the fast-growing industry of induction heating: more induction equipment (using over 175,000,000 watts) was installed in the U.S. last year than in any previous three-year period. And today nearly all of it is used for smithing the weapons of war in arsenals, navy yards, private plants. Induction heating-with welding and substitution of casting for many forging operations-is one of the three...
...Frederick Madison Allen and Lyman W. Crossman of New York City's Welfare Hospital reported last week. The three-stage operation: 1) the limb's blood supply is cut off by a tourniquet; 2) it is anesthetized by cooling to just above freezing with a refrigerating coil; 3) it is amputated. The low temperature reduces post operative infection...
...ordinary 110-volt current to perhaps 1,000,000 volts in a transformer, then jumping it through a straight vacuum tube at a target from which X-rays are emitted. Now, in effect, the betatron combines transformer and vacuum tube. Instead of circling round & round a magnet in a coil of wire, as in a transformer, the electrons whirl through the empty space inside the doughnut-shaped vacuum while their voltage increases...
...report from an unidentified passerby to the effect that an unidentified person was seen late last night throwing a coil of rope out of a fourth story window of Adams House was discounted as pure myth...