Ewen Purcell (2 results)
The Oxford History of the Classical World:
Edited by John Boardman, Jasper Griffin, and Oswyn Murray; Contributors: George Forrest, Oliver Taplin, Jasper Griffin, Ewen Bowie, Martin West, Simon Hornblower, Peter Levi, Oswyn Murray, Julia Annas, Robert Parker, John Boardman, Simon Price, Robin Lane Fox, Jonathan Barnes, Michael Crawford, Elizabeth Rawson, Peter McC Brown, Miriam Griffin, Robin Nisbet, Roger Ling, David Stockton, Nicholas Purcell, Richard Oliver Allen Marcus Lyne, Andrew Lintott, Donald Russell, RIchard Jenkyns, Anthony Meredith, John Matthews, Roger Wilson, and Henry Chadwick.
Language: English
Published by Oxford University Press, Oxford, England / New York, New York 1986
- Hardcover
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Hardcover. Dust Jacket Condition: Good. x, 882 pp. LCC: 8521774 Very good condition; touches of soiling on edges of papers.
- Hardcover
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London, Macmillan & Co., 1951. Royal8vo. Bound in contemporary full cloth with black lettering to spine. In "Nature", Vol. 168, 1951. Bookplates to front free end-paper. Fine and clean. Pp. 356-8. [Entire volume: LXI, (1), 1132 pp.]. First announcement of the important discovery of the hydrogen line, 21 centimeter line or HI lin…e which brought about a revolution in the study of galactic structure. After 1952 the first maps of the neutral hydrogen in the Galaxy were made and revealed, for the first time, the spiral structure of the Milky Way."[Ewen & Purcell] had seen the signal months before, but waited for corroboration by Dutch and Australian astronomers before publishing: Muller and Oort's paper in the pages following Ewen and Purcell's report includes the text of a cable sent by Pawsey from Australia. Oort had already realized the significance of the discovery - that detection of this spectral line, produced by transitions between hyperfine levels of the ground-state hydrogen atom, would permit measurements of velocities by the Doppler effect. The 21-cm line put radio astronomy on the map, and brought about a revolution in the study of galactic structure." (Nature Physics Portal).
