(Encyclopedia) americiumamericiumămərĭˈshēəm [key], artificially produced radioactive chemical element; symbol Am; at. no. 95; mass no. of most stable isotope 243; m.p. about 1,175℃; b.p. about 2,600…
(Encyclopedia) hockey, field, outdoor stick and ball game. Field hockey, like many sports, is of obscure origins, but traces in one form or another to the ancient Egyptians and Persians, making it…
(Encyclopedia) gross national product (GNP), in economics, a quantitative measure of a nation's total economic activity, generally assessed yearly or quarterly. In estimating the GNP, only the final…
(Encyclopedia) pittapittapĭtˈə [key], name used to refer to a genus (Pitta) of small, plump, brightly colored birds. The genus, including some twenty-three species, constitutes the whole of the…
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MATTER IN THE UNIVERSEOUR PLACE IN THE UNIVERSECROWDED CITYOUR PLANETTHE SOLAR SYSTEMOUR GALAXYTHE EXPANDING UNIVERSEWHERE SPACE BEGINSUNIVERSAL FORCESFIND OUT MOREEverything that exists – stars,…
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The Tangent RatioGeometryThe Unit Circle and TrigonometryThe Tangent RatioThe Sine RatioThe Cosine RatioAnd the RestHow Does This Relate to the Unit Circle? Trigonometry got its start from…
business executiveBorn: 2/17/1874Birthplace: Cambell, N.Y. Having begun his career at National Cash Register in Dayton, Ohio (1896–1911), where he learned about punch cards and worked his way up to…
