Word: emits
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Dates: during 1960-1969
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...Webster now accepts "to happen" as a synonym, but gives "to emit moisture, vapor, perfume, etc." as the first definition...
...first observed to emit intense radio radiation in 1942. At the end of World War Two the advances in radio receivers were turned to peaceful studies of extra-terrestrial signals. Astronomical radio telescopes were set up to observe solar radio waves at fixed frequencies, recording changes in signal intensity...
...astronomers have pieced together a theory for the general mechanism which causes giant explosions on the face of the sun--solar flares. The most important concept for analyzing the records is the fact that the frequency of a radio outburst corresponds to the height above the sun's surface emit high frequency signals; bases higher in the solar corona radiate at lower frequencies. Thus, a change in the frequency of a solar signal is caused by a change in the height of the emitting region. With this in mind four general types of solar outbursts have been distinguished...
...continuum bursts themselves are caused by a process known as synchrotron radiation: when electrons traveling at speeds near that of light are accelerated they emit a broad-band radiation. Any modern theory concerning solar flares must somehow explain where these high-speed electrons come from and how they are accelerated in order to explain Type IV radio emission...
...national dialogue over foreign aid that breaks out in the U.S. each spring often takes on some of the qualities of a bad dream. Defenders emit a high-sounding but vague rhetoric. Critics recite nightmarish examples of waste. The two sides seldom even get into communication. Both tend to talk in black and white terms of something that is a complex mixture of pale to dark greys...