Word: spectrogram
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...Kozyrev tells how he trained a 50-in. telescope on the moon on the night of Nov. 2-3 and took spectrograms of the crater Alphonsus. While he was watching, he saw the small, central peak of the crater lose its sharpness and turn reddish. By the time he changed the plate to take the next spectrogram, the peak was white again but much brighter than usual. A third spectrogram showed the crater back to normal...
...failures (which surprised no one in the tricky rocket business). The fourth trial succeeded. The sun-seeker found the sun and held the camera steady on it for long enough to get a 28-second exposure. The film, recovered undamaged from the rocket's wreckage, showed a sharp spectrogram of the sunlight taken at 50 miles altitude, above nearly all of the atmosphere. The bulk of the ultraviolet was at just the place on the sun's spectrum where the scientists thought it would be: at 1,216 angstroms...
...being pounded to splinters by Drs. Donald H. Menzel of Harvard Observatory and J. C. Boyce of Massachusetts Institute of Technology. Since 1869 the light of the sun's spectacular corona, trapped in spectroscopes during the scant seconds of a total eclipse, has produced on the spectrogram five mysterious bright lines. Astronomers deduced that the corona, though mostly scattered sunlight, was partly self-luminous. What element made it so? Not knowing, they called it "coronium." As recently as last year, in a standard work on eclipses, "coronium" was treated with respect. The Menzel-Boyce report unmasks it as mostly...
...three speeds at which definite vibrations developed. The balls representing the atoms moved over paths of a pattern characteristic for each speed. To the delight of Messrs. Kettering, Andrews & Shutts, the relation of the speeds to one another coincided almost exactly with the relation of vibration lines in the spectrogram of water. Thereupon they built "molecules" of benzene, toluene, carbon tetrachloride and methane and found that they worked almost exactly according to current atomic theory, thereby confirming that theory mechanically and giving instructors beautifully precise tools for classroom exposition...