Word: violet
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...Harvard spectrometer, designed to observe the sun closely by ultra-violet light from above its obscuring atmosphere, was successfully launched yesterday aboard an Aerobee rocket from the White Sands Proving Ground in New Mexico, by the National Aeronautics and Space Administration...
...Harvard spectrometer is designed to observe the solar flares in two ways. First, rather than recording ultra-violet light from the whole solar disc, it can concentrate on a small spot in the center. During this mode of operation, the spectrometer will record the intensity of radiation over the whole ultra-violet spectrum in about 27 minutes...
...information recorded by the instrument will then be recorded and relayed to earth on command. Each complete scan will take about four-and-one-half minutes and should provide a crude ultra-violet picture of the whole...
...ultra-violet spectroscope built by the University will be constantly looking at those short wave lengths of solar light which are normally absorbed by the earth's atmosphere. There are three reasons for this experiment...
...second aim of Harvard's instrument is to obtain information on the earth's ionosphere, the layer of the atmosphere used to bounce radio signals around the globe. By observing how the sun emits ultra-violet light, scientists may learn more about the mechanism of ionospheric interference with radio transmission...