Word: ratio
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Dates: during 1960-1969
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Several groups of the eager investigators have been assigned the job of measuring the age of the lunar specimens by radioactive dating methods. By determining the ratio of radioactive elements (say, rubidium and uranium) in a moon sample to the amounts of their products of decay (strontium and lead, respectively), scientists can make a good approximation of its age. Thus, because the Apollo 11 samples will be taken from the surface of the Sea of Tranquillity, researchers may well be able to estimate the age of the moon's maria, or seas. This, in turn, might settle a longstanding controversy...
...mean nearly a year's living for a village family in the interior. Also, as more people move into hitherto virgin territory, there is a greater chance of accidental fires. Until recently, about 80% of Alaska's fires were caused by lightning, 20% by man; the ratio is now nearly reversed. Careless campers on the Kenai Peninsula, for example, left the embers that last month destroyed 2,578 acres of prime timber, most of it in a national moose range...
...constitution's possibilities for repressive laws. Sooner or later, those laws are likely to be needed. South Africans are outnumbered by Africans only 4 to 1. White Rhodesians have set themselves the task of staying on top in a country where they are a minority by a ratio...
...Unanimously required the Montgomery County, Ala., board of education to assign teachers and other staff members to each of its schools this year in a ratio of at least one black to every five whites. In so ruling, the court supported a quota system for the first time -and may well have opened a Pandora's box of litigation involving race quotas in such areas as industrial promotions, school admissions and housing rentals. The quota, which was originally ordered by District Judge Frank Johnson, had been pronounced too inflexible a standard by a federal appeals court. But Justice Hugo...
March 3: The Corporation agreed to open merger talks with Radcliffe with a goal of achieving full merger by the Fall of 1970. The Corporation also outlined several problem areas to be ironed out--including financial and legal arrangements, co-ed housing plans, and the ratio of male and female undergraduates--before the merger could be consummated...