. The American journal of roentgenology, radium therapy and nuclear medicine . achtleh, 224 Michigan St., Toledo, Ohio EditorH. M. IMBODEN, , 480 Park Ave., New York, Associate EditorPercy Brown, , Boston, Mass. Sir William Crookes 1832-1919 The recent death of Sir WilUam Crookescalls to mind many activities associatedwith his name. His numerous and variedachievements would occupy much spaceto record even in title, and produce a pro-found impression. One feels instantly therespect due to a life of unusually long andfruitful service. Born in 1832, his scientificcareer proper began i
. The American journal of roentgenology, radium therapy and nuclear medicine . achtleh, 224 Michigan St., Toledo, Ohio EditorH. M. IMBODEN, , 480 Park Ave., New York, Associate EditorPercy Brown, , Boston, Mass. Sir William Crookes 1832-1919 The recent death of Sir WilUam Crookescalls to mind many activities associatedwith his name. His numerous and variedachievements would occupy much spaceto record even in title, and produce a pro-found impression. One feels instantly therespect due to a life of unusually long andfruitful service. Born in 1832, his scientificcareer proper began in 1851; by 1857 hehad published important contributions inchemistry, and in 1861 announced thediscovery of the element thallium by thenew spectroscope method. Probably few people think of Crookes as the discovererof a new element, although thallitim, itsproperties and compounds, received muchof his attention for many years. His studies of various phenomena inrarefied gases have been the starting pointof much modern research. One has only tomention the Crookes radiometer and. Sir William Crooxes Crookes tubes to indicate how close washis work of the 70s to that of such discoveries and so great successmany men would have been content, butCrookes was still active on the problemsof the constitution of matter, showing byhis publications that he was not far fromwhat we call the modern point of view. In this connection it is particularlyinteresting at this time to read of the con-troversy between Crookes and certain407 4o8 Editorials investigators of the continent, led byGoldstein, Hittorf and Pflucker. Crookesheld that the cathode stream was actuallymatter in motion across the tube, while hisopponents supported the view that it wasa wave motion. Researches since 1895 haveshown that while the particles were muchsmaller than molecules, as Crookes sup-posed them to be, nevertheless his generalidea was quite in accord with the electrontheory. The discovery of radium must have
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