John Reynolds (physicist): Difference between revisions
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| doi = 10.1103/PhysRevLett.4.8}}</ref> This xenon might come from pre-solar dust grains. His improvement of [[potassium-argon dating]] was adopted by several institutions.<ref name=im>[http://content.cdlib.org/xtf/view?docId=hb1r29n709&doc.view=content&chunk.id=div00061&toc.depth=1&brand=oac&anchor.id=0 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]].</ref><ref>[http://www.nap.edu/readingroom/books/biomems/jreynolds.html John H. Reynolds], P. Buford Price, ''Biographical Memoirs'' '''85''' (2004), |
| doi = 10.1103/PhysRevLett.4.8}}</ref> This xenon might come from pre-solar dust grains. His improvement of [[potassium-argon dating]] was adopted by several institutions.<ref name=im>[http://content.cdlib.org/xtf/view?docId=hb1r29n709&doc.view=content&chunk.id=div00061&toc.depth=1&brand=oac&anchor.id=0 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]].</ref><ref>[http://www.nap.edu/readingroom/books/biomems/jreynolds.html John H. Reynolds], P. Buford Price, ''Biographical Memoirs'' '''85''' (2004), pp. 248–267, National Academy of Sciences, ISBN 0-309-10363-0. Accessed on line [[October 24]], [[2007]]. </ref> |
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Reynolds died of [[pneumonia]] on [[November 4]], [[2000]] in [[Berkeley, California|Berkeley]], [[California]], [[USA]].<ref name=im /> |
Reynolds was elected to the [[National Academy of Sciences]] in 1968. He died of [[pneumonia]] on [[November 4]], [[2000]] in [[Berkeley, California|Berkeley]], [[California]], [[USA]].<ref name=im /> |
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==References== |
==References== |
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Revision as of 16:42, 24 October 2007
John Hamilton Reynolds | |
|---|---|
| Born | April 3, 1923 |
| Died | November 4, 2000 (aged 77) |
| Alma mater | University of Chicago, University of California, Berkeley |
| Known for | Discovery of excess meteoritic 129Xe |
| Scientific career | |
| Fields | Geophysics |
| Institutions | Harvard University, University of Chicago |
| Doctoral advisor | Mark Ingram, Harold Urey, Enrico Fermi |
John Hamilton Reynolds[1] (April 3, 1923–November 4, 2000) was an American physicist and a specialist in mass spectroscopy.[2]
Life
John H. Reynolds was born April 3, 1923 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 Ingram and by two other famous physicists, Harold Urey and Enrico Fermi. He specialized in mass spectroscopy 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 meteorites had an excess of xenon-129.[3][4] This xenon might come from pre-solar dust grains. His improvement of potassium-argon dating was adopted by several institutions.[2][5]
Reynolds was elected to the National Academy of Sciences in 1968. He died of pneumonia on November 4, 2000 in Berkeley, California, USA.[2]
References
- ^ The Leonard Medal, Meteoritics 8 (1973), pp. 291–293.
- ^ a b c 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.
- ^ J. H. Reynolds (1960). "Isotopic Composition of Primordial Xenon". Physical Review Letters. 4 (7): 351–354. doi:10.1103/PhysRevLett.4.351.
- ^ J. H. Reynolds (1960). "Determination of the Age of the Elements". Physical Review Letters. 4 (1): 8–10. doi:10.1103/PhysRevLett.4.8.
- ^ John H. Reynolds, P. Buford Price, Biographical Memoirs 85 (2004), pp. 248–267, National Academy of Sciences, ISBN 0-309-10363-0. Accessed on line October 24, 2007.