Word: aftershocks
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Dates: during 1950-1959
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...Caltech's Seismological Laboratory, such researchers as Hugo Benioff and Beno Gutenberg have explored the crust and core of the earth, and found out as much as any men alive about the nature of seismic waves, earthquakes, aftershock. Physicist C.C. Lauritsen produced the first 1,000,000-volt X-ray tube, and Carl Anderson won a Nobel Prize for discovering the positron. Meanwhile, Caltech biologists have been probing their own areas of the invisible. Geneticist Alfred H. Sturtevant described the linear order of genes; Calvin B. Bridges provided proof for the chromosome theory of heredity. In determining that genes...