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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク John Reynolds (physicist) ： ウィキペディア英語版 John Reynolds (physicist) John Hamilton Reynolds〔(The Leonard Medal ), ''Meteoritics'' 8 (1973), pp. 291–293.〕 (April 3, 1923–November 4, 2000) was an American physicist and a specialist in mass spectrometry.〔 ==Life== John H. Reynolds was born in Cambridge, Massachusetts, USA. He studied first at Harvard University and, after serving in the Navy during World War II, at the University of Chicago. There, he was influenced by his Ph.D. thesis advisor Mark Inghram and by two other famous physicists, Harold Urey and Enrico Fermi. He specialized in mass spectrometry and utilized this method to determine isotope ratios needed for the radiometric dating of geologically and cosmologically relevant samples. In 1950 he was appointed as professor to the University of California, Berkeley where he continued his research on isotope ratios in meteorites, leading to the discovery in 1960 that the Richardton meteorite and other meteorites had an excess of xenon-129, thought to be a result of the beta decay of iodine-129 in the early solar system. His improvement of potassium-argon dating was adopted by several institutions.〔(John H. Reynolds, Physics: Berkeley ), Bruce A. Bolt, Richard E. Packard, and P. Buford Price, in ''University of California: In Memoriam, 2000'', edited by Micki Conklin, University of California Academic Senate, 2000. Accessed on line October 24, 2007.〕 Reynolds was elected to the National Academy of Sciences in 1968. He died of pneumonia on November 4, 2000 in Berkeley, California, USA.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「John Reynolds (physicist)」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.