Word: ac
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Dates: during 1960-1969
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Slim Cables. Alternating current, which changes direction some 60 times per second, is far more versatile because its voltage can be raised or lowered easily by simple, cheap transformers. Modern generating plants produce AC at comparatively low voltage, and for long-distance transmission, transformers step it up to several hundred thousand volts so that it will pass through cables of reasonable size without too much loss.* When it reaches its destination, transformers reduce the voltage for use in homes and industries...
...build. Their smooth stream of electricity is easier to control and to blend with current from other sources in a network. Trouble is, DC cannot be handled by transformers; what was needed to fit it for the big-time was a practical method of manufacturing it from high-voltage AC current at the generator end of the line, and of converting it back to AC at the customers...
Inner Space. The facts are bare indeed. Born in Prague 88 years ago, he died of leukemia in Switzerland in 1926; the events in between are almost ac counted for by the names of the countries he visited or lived in (Germany, France, Russia, Spain, Italy) and the handful of friends he made-the most important of them women. These ladies included the Princess of Thurn and Taxis and the fabulous Lou AndreasSalome, who was his elder by 14 years and who deeply impressed-besides the poet-Friedrich Nietzsche and Sigmund Freud. His love for Lou Andreas was a lifelong...
...marriage, Pope Pius XI declared that Catholic couples had every right to sexual intercourse during times of natural infertility. His successor, Pius XII, defended the right of parents to limit or space their children for medical, economic, eugenic or social reasons. But even as church leaders came to ac cept the idea of family limitation, they held out against mechanical and chemical means of achieving this goal, arguing that they violated natural...
...Corp. of Hempstead, L.I., has miniaturized the ECG with 24 transistors. The result is a box that is crammed with components. But it is little more than 8 in. square and less than 6 in. thick, weighing only 10 Ibs., and it can be plugged into any 110-volt AC line. It makes its diagnostic tracings on standard ECG paper and records all the standard ECG information...