Biography Category
1779–1849, and James Smith, 1775–1839, English parodists, brothers. They wrote the famous Rejected Addresses (1812) which burlesqued such contempo...
polymer in which atoms of silicon and oxygen alternate in a chain; various organic radicals, such as the methyl group, CH3, are bound to the silicon a...
(s d´ ) (KEY) , 1877–1956, English chemist. He worked under Lord Rutherford at McGill Univ. and with Sir William Ramsay at the Univ. of London. Aft...
1811–75, American inventor, b. Rensselaer co., N.Y. As a child he lived in Oswego, N.Y. He patented in 1851 a practical sewing machine that could do...
(kl ´´ m ´d z, kl ´´ –) (KEY) , fl. 2d cent., Greek astronomer. In a treatise on the circular theory of heavenly bodies, he recorded several hy...
any levy that serves as the government’s only source of revenue. Generally, however, it is understood to mean a tax derived from economic rent and u...