1872–1973, American astrophysicist, b. Wilton, N.H. He was acting director in 1896 and director in 1907 of the astrophysical observatory of the Smit...
city (1990 pop. 100,814), seat of Minnehaha co., SE S.Dak., on the Big Sioux River; settled 1856, inc. as a village 1877, as a city 1883. Settlers aba...
precipitation of small, partially melted grains of ice. As raindrops fall from clouds, they pass through layers of air at different temperatures. If t...
1931–, American biologist, b. New York City, M.D. Johns Hopkins Univ., 1956. A professor at the Univ. of Michigan and Johns Hopkins Univ., Smith wor...