Word: nitrogenated
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...Praveen Chaudhari: "All the mental barriers are gone. No one is asking how high it will go anymore." If room-temperature superconductivity is achieved, whether in a year or in a score of years, its impact will be incalculable. The need for refrigerators and insulation, even for liquid / nitrogen, will be gone. And the costs of this still futuristic technology could drop more dramatically than anyone expects. Says IBM's Paul Grant: "We're looking. Everyone is." Adds IBM's William Gallagher: "We shouldn't let our imaginations be constrained by things we now know about. We're just...
...press as well as in professional journals -- of new superconducting materials and ever higher temperature ranges. An effect that once could be detected only with sophisticated equipment has become a common sideshow at conferences: a sample of one of the new materials is placed in a dish of liquid nitrogen, and a magnet placed above it. Since superconductors repel magnetic fields, a phenomenon called the Meissner effect, the magnet remains suspended in midair...
...unusual class of ceramic compounds that change everything. They too must be cooled to become superconductors, but only to a temperature of 98 K (-283 degrees F). And that suddenly brings superconductivity into the range of the practical; liquid helium can be replaced as a coolant by liquid nitrogen, which makes the transition from a gas at the easily produced temperature of 77 K (-320 degrees F). Moreover, liquid nitrogen is cheaper by the quart than milk and so long- lasting that scientists carry it around in ordinary thermos bottles. Also, the & ceramics may be able to generate even more...
...promise that Chu filed a patent application on Jan. 12. That promise was soon fulfilled. At the end of the month, after subjecting their creation to a series of heat and chemical treatments, Wu and his assistants began chilling a bit of the compound, by dousing it with liquid nitrogen, and sending an electric current through it. To their amazement, the sample's resistance began to drop sharply at a towering 93 K. Recalls Wu: "We < were so excited and so nervous that our hands were shaking. At first we were suspicious that it was an error...
Every year tons of sulfur dioxide and nitrogen oxides generated by U.S. coal- fired power plants drift northward to fall on Canadian forests and lakes as acid rain. Ronald Reagan has mostly resisted Canada's repeated requests that the U.S. clean up the skies. Last week, 14 months after a joint U.S.-Canadian commission recommended that the U.S. spend $5 billion to find cleaner methods for burning coal, the President promised to commit half that amount, $2.5 billion over five years. The belated gesture should smooth the way for Reagan's visit next month to Ottawa, where environmentalists plan...