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1 giorno fa · Major-General George Bingham Arbuthnot (1803—1867), Madras Light Cavalry; Major-General Henry Thomas Arbuthnot (1834—1919), Royal Artillery; General Sir Hugh Arbuthnot (1780—1868), Colonel of the 79th Regiment of Foot (Cameron Highlanders) Lieutenant-General Sir Robert Arbuthnot (1773—1853), General Officer Commanding, Ceylon
10 ore fa · Iridium is a chemical element; it has symbol Ir and atomic number 77. A very hard, brittle, silvery-white transition metal of the platinum group, it is considered the second-densest naturally occurring metal (after osmium) with a density of 22.56 g/cm 3 (0.815 lb/cu in) [8] as defined by experimental X-ray crystallography. [a] 191 Ir and 193 Ir ...
1 giorno fa · John Edgar Hoover (January 1, 1895 – May 2, 1972) was an American law-enforcement administrator who served as the final Director of the Bureau of Investigation (BOI) and the first Director of the Federal Bureau of Investigation (FBI). President Calvin Coolidge first appointed Hoover as director of the BOI, the predecessor to the FBI, in 1924.
