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| == 19th Century ==
| | see [[wikipedia:History of mass spectrometry]] |
| | | [[category:miscellaneous]] |
| :'''1886'''
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| ::Eugen Goldstein [http://en.wikipedia.org/wiki/Eugen_Goldstein] observes canal rays.
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| :'''1898''' | |
| ::Wilhelm Wien [http://nobelprize.org/physics/laureates/1911/wien-bio.html] demonstrates that canal rays can be deflected using strong electric and magnetic fields.
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| == 20th Century ==
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| :'''1905'''
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| ::J. J. Thomson [http://nobelprize.org/physics/laureates/1906/thomson-bio.html] begins his study of positive rays.[http://www.amazon.com/exec/obidos/tg/detail/-/0941901319?v=glance]
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| :'''1919'''
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| ::Francis Aston [http://www.nobel.se/chemistry/laureates/1922/aston-bio.html] constructs the first velocity focusing mass spectrograph with [[mass resolving power]] of 130 (Aston, F. W. A positive-ray spectrograph. ''Phil. Mag.'' '''1919''', 38, 707-715).
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| :'''1922'''
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| ::Francis Aston [http://www.nobel.se/chemistry/laureates/1922/aston-bio.html] is awarded the Nobel Prize in chemistry "for his discovery, by means of his mass spectrograph, of isotopes, in a large number of non-radioactive elements, and for his enunciation of the whole-number rule."
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| == 21st Century ==
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| :'''2002'''
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| ::John Fenn [http://www.nobel.se/chemistry/laureates/2002/index.html] and Koichi Tanaka [http://www.nobel.se/chemistry/laureates/2002/index.html] are awarded one-quarter of the Nobel Prize in chemistry each "for the development of soft desorption ionisation methods ... for mass spectrometric analyses of biological macromolecules."
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| =External Links=
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| :*[http://www.chm.bris.ac.uk/ms/history.html Bristol History of Mass Spectrometry]
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| :*[http://www.amazon.com/exec/obidos/tg/detail/-/0941901319?v=glance Measuring Mass: From Positive Rays to Proteins by Michael A. Grayson (Editor)]
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| :*[http://masspec.scripps.edu/MSHistory/mshisto.php Scripps History of Mass Spectrometry]
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| :*[[Wikipedia:Mass spectrometry]]
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