Word: barium
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Muller and his colleague, Johannes Georg Bednorz, tinkered with hundreds of different oxide compounds over the next few years, varying quantities and ingredients like alchemists in search of the philosopher's stone. Finally, in December 1985, they came across a compound of barium, lanthanum, copper and oxygen that seemed promising. When Bednorz tested the compound, he was startled to see signs of super-conductivity at an unprecedented 35 K, by far the highest temperature at which anyone had observed the phenomenon. Could this result be correct? Aware of some hastily made superconductivity claims that later could not be reproduced...
...much sought-after goal proved to be elusive. In the early 1970s scientists found an alloy of niobium and germanium that lost all resistance at 23 K. Then, last April, a group at the IBM Zurich Research Laboratory in Switzerland announced development of a compound of barium, lanthanum, copper and oxygen that appeared to begin the transition to superconductivity...
...Pacific, a group of scientists from the U.S., West Germany and Britain will begin their holiday celebrations by monitoring a unique experiment: the creation of the first man-made comet. A satellite orbiting some 70,000 miles above earth will release four canisters containing about 90 lbs. of barium and copper powder, worth $240,000. The powder will swell into a gaseous cloud 100 miles across that will glow pale yellow-green and then a dusky purple; as it expands, the cloud will grow a comet's classic tail...
...that the magnetosphere presents a more solid barrier to the solar wind than had previously been believed. Soaring beyond the magnetosphere, the Christmas comet will enable scientists to study the effects of the solar wind on an object without a magnetic field. The West German satellite will release the barium, while the British craft records the progress of the comet, measuring the tail and noting how long it takes for the solar wind to disperse it. The U.S. satellite will track how much barium is able to penetrate the magnetosphere...
Catherine G. Kelly Barium Springs...