Word: coronas
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Dates: during 1960-1969
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...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...
...Noise Storm. A noise storm consists of a series of short individual bursts of radiation, each lasting a minute or less. The source of these bursts is a turbulent area in the corona above an active sunspot. An entire noise storm may last for hours of days. The bursts are generally confined to a narrow range of frequencies, not greater than 30 megacycles, because the emitting region is at a fairly constant height in the corona...
People who got a good look at the sun's glowing corona during its recent eclipse may have seen faint veils of light trailing off into space. Appearing as harmless as thistledown, they were visible evidence of the sun's far-reaching violence. Stormy weather on the sun sometimes tosses out clouds of deadly particles, mostly protons, that can kill in a few minutes any humans riding in thin-walled spacecraft. So among the scientists who studied the corona were members of a new, specialized profession: solar meteorology. Their job is to learn to forecast solar weather...
...have clear sky for the 50 seconds of totality. If so, the two interesting solar phenomena that can be photographed are Bailey's Beads, which occur for a second just before and just after totality when light breaks through the valleys on the moon's rim, and the solar corona...
...Corona del Mar, Calif...