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1934 Geografiska Annaler 16 107 Thus comparisons of compass directions and great circle lines in studies of terrestrial magnetism and electricity, seismology and isostasy, radio emission and skip distances, etc. would all be simplified on maps of the same size and similar form.

1958 Listener 27 Nov. 870/1 The sun spots and flares which occasionally appear on the solar surface are associated with large and irregular increases in the solar radio emissions.

1992 Astron. Now July 15/3 Spacecraft have..added a new dimension to the science with the occultation of the radio emission from the spacecraft as it passes behind or reappears from behind the planet.

2003 New Scientist 5 July 8/4 Project leader Jill Tarter and her colleagues will investigate the size and age of M-stars to deem whether it is worth scanning them for radio emissions and the possibility of intelligent beings.