Word: zeros
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Dates: during 1980-1989
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Superconductivity is aptly named. It involves a remarkable transition that occurs in many metals when they are cooled to temperatures within several degrees of absolute zero, or, as scientists prefer to designate it, 0 Kelvin. Absolute zero, equivalent to -460 degrees F or -273 degrees C, represents a total absence of heat; it is the coldest temperature conceivable. As the + metals approach this frigid limit, they suddenly lose all their electrical resistance and become superconductors. This enables them to carry currents without the loss of any energy and in some cases to generate immensely powerful magnetic fields. Scientists have recognized...
DESCRIPTION: Highest known superconducting temperatures for various materials on a scale of absolute zero to over 100 Kelvin for the years 1911 to 1980, with illustration of scientist holding thermometer bounding up steps...
Arafat resisted a demand by the radicals that he sever ties with Egypt. ; But he accepted their view that if an international peace conference ever held, the P.L.O. should have its own representatives and not simply be part of another Arab delegation. That decision reduced to an absolute zero whatever slight chance existed of progress toward peace in the immediate future...
Last week the Reagan Presidential Foundation responded to the furor by proposing its own scaling back -- to zero. It announced that the library and center will be built in Southern California instead. Christopher and Stanford President Donald Kennedy expressed disappointment, but some saw the withdrawal as a victory for academic integrity. "A lot of people will be full of elation tonight," said Political Science Professor John Manley...
...perhaps half the nation' s illegal aliens while making it harder for the rest to live and work in the U. S. -- Texas Billionaire H. Ross Perot launches a private probe into what he believes is a network of former CIA agents and military officials. -- Richard Nixon analyzes the zero option. -- An unwanted garbage barge hunts for a friendly dump...