Word: spectrograms
(lookup in dictionary)
(lookup stats)
Dates: during 1950-1959
Sort By: most recent first
(reverse)
...Kozyrev shows a spectrogram with an unusual bright streak, and explains what he thinks happened. The reddish patch over the crater's central peak he believes was caused by volcanic ash shot out of the moon's crust. The dust settled quickly, since there is no air to keep...
...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...
...stream of gas followed the ash and spread into the vacuum above the moon's surface. The gas contained carbon molecules of various sorts, and ultraviolet light from the sun made them glow brilliantly, accounting for the bright streak on the spectrogram...
...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...