| 释义 |
radio astronomy
Also with hyphen and as radioastronomy.
[f. radio n. + astronomy.]
The branch of astronomy concerned with the study and interpretation of radio waves reaching the earth from space, and with the astronomical use of radio-echo techniques.
1948Sci. News Let. 1 May 279/1 Radioastronomy is a new branch of astronomy only recently announced, Dr. Shapley stated. By use of high-frequency radio waves meteors are tracked in their flight. 1951Sci. News XXI. 40 There are two basic methods of observing in radio astronomy. In the first, we use the familiar processes of radar to explore space around us... The second method is the one in general use. Radiation of radio wavelengths, emitted.. by extra⁓terrestrial bodies, is collected. 1951Nature 7 July 17/1 Dr. Alfred Charles Bernard Lovell has been appointed to a newly created chair of radio-astronomy in the University of Manchester. 1958Listener 27 Nov. 869/2 Out of the cataclysm of a world war have emerged two technical developments which are creating a revolution in astronomical observations—radio astronomy and the earth satellite. 1966McGraw-Hill Encycl. Sci. & Technol. XI. 247/1 Large radio antennas designed for radio astronomy are now used for radar, radio communications, and satellite telemetering. 1973‘D. Halliday’ Dolly & Starry Bird xiii. 188 Innes is a Steady-State man, having done a sabbatical on radio astronomy at Cambridge. 1977J. Narlikar Struct. Universe iii. 66 Radio-astronomy has played an important part in galactic explorations. For example, 21-cm radio wave⁓length observations are useful for detecting neutral hydrogen. 1978R. V. Jones Most Secret War xlix. 486 We supplied German radar components..to both Bernard Lovell and Martin Ryle, to help them in their start on radio⁓astronomy.
Hence radio astronomer, a person engaged in radio astronomy; ˌradio-astroˈnomical a., of or pertaining to radio astronomy; obtained by means of radio telescopes.
1949Nature 12 Nov. 815/2 Three British research organizations which have played a major part in radio⁓astronomical research. 1952Ibid. 1 Mar. 350/1 It appears likely that..experimental radio astronomers will concentrate their attention on devices for achieving increased angular accuracy. 1959Listener 31 Dec. 1152/2 Interest in peculiar galaxies has been stimulated recently by radio-astronomical observations. 1962New Scientist 5 Apr. 827/3 The primary gamma-ray picture of the Universe might resemble the radioastronomical one. 1968Times 26 Oct. 4/4 A new pulsar has been discovered by radio astronomers at Jodrell Bank. 1973C. Sagan Cosmic Connection vi. 47 We see..in radio⁓astronomical studies of the interstellar medium, a profusion of simple and complex organic molecules. 1976Time 27 Dec. 37/2 Radioastronomers..have beamed coded signals toward the stars to let any other civilization know that intelligent life exists on earth. |