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roentgen
Book article from: The Oxford Essential Dictionary of the U.S. Military
roentgen ˈrentgən; ˈrənt-; -jən n.a unit of exposure dose of gamma (or X) radiation. One roentgen is essentially equal to one rad.
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Röntgen (Roentgen), Wilhelm Conrad
Dictionary entry from: Complete Dictionary of Scientific Biography
R ö NTGEN (ROENTGEN), WILHELM CONRAD ( b . Lennep im Bergischen [now part of Remscheid], Rhine Province, Germany, 27 March 1845; d . Munich...
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rem
Book article from: The Oxford Essential Dictionary of the U.S. Military
rem n. roentgen equivalent mammal the quantity of ionizing radiation that, when absorbed...physiological effect equivalent to that produced by the absorption of one roentgen of X-ray or gamma radiation; it is used in connection with calculating...
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Becoquerel, [Antoine-] Henri
Dictionary entry from: Complete Dictionary of Scientific Biography
...remembered still undone. In the very opening days of the year, Roentgen had announced his discovery of X rays by a mailing of preprints...who had received a preprint, Becquerel learned that in Roentgen ’ s tubes the X rays arose from the fluorescent spot...
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X-ray astronomy
Book article from: A Dictionary of Astronomy
...In particular, the large array of proportional counters on Ginga improved spectral studies of X-ray sources. In 1987 the Roentgen Observatory was docked to the Mir space station. It was followed by the Granat satellite in 1989. X-ray astronomy has continued...
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radiation units
Book article from: A Dictionary of Biology
...or gamma-radiation that produces ion pairs carrying 1 coulomb of charge of either sign in 1 kilogram of pure dry air. The former unit, the roentgen (R), is equal to 2.58 × 10 –4 C kg –1 .
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Curie, Pierre
Dictionary entry from: Complete Dictionary of Scientific Biography
...scientific career and married Fr é d é ric Joliot, and Eve, born in 1904. It was Marie Curie who, impressed by Roentgen ’ s and Becquerel ’ s discoveries, considered investigating other substances exhibiting the same properties...
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Ladenburg, Rudolf Walther
Dictionary entry from: Complete Dictionary of Scientific Biography
...University of Heidelberg. He returned to Breslau in 1901 and in 1902 went to Munich, where he took his Ph.D. in 1906 under Roentgen with a thesis on viscosity, a subject that held his interest until he began work in spectroscopy in 1908. From 1906 to 1924...
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radiation dose
Book article from: The Oxford Essential Dictionary of the U.S. Military
...centigrays. The term “radiation dose” is often used in the sense of the exposure dose (expressed in roentgens), which is a measure of the total amount of ionization that the quantity of radiation could produce in air. This could...
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Dingler, Hugo Albert Emil Hermann
Dictionary entry from: Complete Dictionary of Scientific Biography
...ttingen, and Munich. Among his teachers were David Hilbert, Felix Klein, Edmund Husserl, Hermann Minkowski, Wilhelm Roentgen, and Woldemar Voigt. Dingler received his doctor ’ s degree in mathematics and qualified as lecturer in 1912 at...
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