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polonium
(Encyclopedia)polonium pəlōˈnēəm [key], radioactive chemical element; symbol Po; at. no. 84; mass no. of most stable isotope 209; m.p. 254℃; b.p. 962℃; sp. gr. about 9.4; valence +2 or +4. Polonium is an e...Duane, William, American physicist
(Encyclopedia)Duane, William, 1872–1935, American physicist, b. Philadelphia, grad. Harvard, 1893, Ph.D. Univ. of Berlin, 1897. He taught at the Univ. of Colorado (1898–1907), worked at the Curie radium laborat...McLennan, Sir John Cunningham
(Encyclopedia)McLennan, Sir John Cunningham, 1867–1935, Canadian physicist, grad. Univ. of Toronto (B.A., 1892; Ph.D., 1900). He taught at the Univ. of Toronto from 1892 to 1932, was professor of physics from 190...Joliot-Curie
(Encyclopedia)Joliot-Curie ērĕnˈ [key], 1897–1956, daughter of Pierre and Marie Curie, were married in 1926. Both were assistants at the Radium Institute in Paris, of which Irène, succeeding her mother, was d...Jamnagar
(Encyclopedia)Jamnagar jämˈnəgər [key], city (1991 pop. 381,646), Gujarat state, W central India. A port on the Gulf of Kachchh, which is an arm of the Arabian Sea, Jamnagar has naval and aeronautical schools. ...Abbe, Robert
(Encyclopedia)Abbe, Robert ăbˈē [key], 1851–1928, American surgeon, b. New York City, M.D. Columbia, 1874; brother of Cleveland Abbe. He was especially noted as a plastic surgeon and was a pioneer in the use o...Meitner, Lise
(Encyclopedia)Meitner, Lise lēˈzə mītˈnər [key], 1878–1968, Austrian-Swedish physicist and mathematician. She was professor at the Univ. of Berlin (1926–33). A refugee from Germany after 1938, she became ...Canonsburg
(Encyclopedia)Canonsburg, borough (2020 pop. 8,672), Washington co., SW Pa., inc. 1802. Its steel and coal industries have declined significantly. A gram of radium pr...Ramsay, Sir William
(Encyclopedia)Ramsay, Sir William, 1852–1916, Scottish chemist. He was professor of chemistry at University College, Bristol (1880–87), and at University College, London (1887–1912). In his early experiments ...radon
(Encyclopedia)radon rāˈdŏn [key], gaseous radioactive chemical element; symbol Rn; at. no. 86; mass no. of most stable isotope 222; m.p. about −71℃; b.p. −61.8℃; density 9.73 grams per liter at STP; vale...Browse by Subject
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