Word: joining
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Dates: during 1970-1979
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This attitude contributed to the success the CIA had in recruiting Harvard students, many Class members agree. Although no statistics are available on how many members of the Class of '52 did join the CIA, at least two have died while employed...
...improbable scenes that are becoming a kind of trademark of the Carter Administration. Jimmy Carter was at Notre Dame's commencement last week to receive an honorary degree, and so was Federal Reserve Board Chairman Arthur Burns. When Burns' name was called, Carter did more than just join in the general applause, as he had for the others. He got up and walked to the podium with the patrician boss of the Fed. There, grinning broadly, the populist Chief Executive pointedly shook hands with the rock-ribbed Republican central banker and, clasping his shoulder, offered his congratulations...
...less mass than the sum of the original nuclei; again, matter has been converted into energy. But while atomic nuclei easily split, they do not easily fuse; they have positive electric charges and thus repel each other, acting as if they had invisible springs between them. Getting them to join requires that they approach each other with enough energy to overcome their natural repulsion and smash together. Thus causing large numbers of nuclei to fuse and provide substantial energy requires three conditions: 1) very high temperatures (which impart great velocity to the nuclei), 2) high density (the nuclei crowded together...
Tiny Bombs. Still, to join enough deuterium and tritium nuclei to sustain a fusion reaction requires heroic efforts. Deuterium-tritium gas mixtures must be heated to as much as 100 million degrees Celsius and be maintained at that temperature for about one second at a density of about 1014 (100 trillion) particles per cubic centimeter. Scientists have taken two different routes in their efforts to achieve these critical conditions. One is to use a "magnetic bottle" -an enclosing magnetic field-to contain the hydrogen fuel. The other is to use lasers or electron beams to make miniature hydrogen "bombs...
...Path Between the Seas looks back with frank admiration on the men and machines that toiled 44 years to join the Atlantic and Pacific oceans at the Isthmus of Panama. Historian David McCullough, 44, author of The Johnstown Flood and The Great Bridge, skirts such contemporary controversies as U.S. control over the Canal Zone. There is matter enough for him in history. The isthmus belonged to Colombia until 1903, when the U.S., under Teddy Roosevelt, encouraged a local revolt and sent American warships to block the landing of Colombian troops. Congressional doves objected to the gunboat diplomacy, but they were...