Word: ultraviolet
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...Aerobee-Hi rocket carrying a Harvard-built ultraviolet spectrometer was launched from White Sands, N.M., earlier this month. It was the second rocket-test for the spectrometer, which is scheduled to be launched in a satellite sometime in December...
...Harvard instrument, which has been in preparation under Leo Goldberg, Higgins Professor of Astronomy, since early 1959, is designed to observe the sun in the short ultraviolet wavelengths that cannot penetrate the earth's atmosphere...
During the latest test the Aerobee-Hi rocket rose to an altitude of over 200 kilometers. At this height the spectroscope, mounted in the nose of the rocket, was automatically pointed at the center of the sun and observed the ultraviolet radiation above the layers of air that normally form that part of the solar spectrum...
...roughly three minutes at the peak of the rocket's orbit, the spectrometer functioned in its first mode of operation, recording the intensity of ultraviolet light over a narrow range of frequencies. Three and one half scans were completed before the Aerobee plunged back towards earth...
Sagan synthesized the molecule by shining ultraviolet light on a solution of compounds comparable to those found in the Earth's primitive oceans about four billion years ago. Unlike today, ultraviolet light probably reached the primitive Earth unhindered by a dense atmosphere. If this was the case, organisms obtained most of their energy directly from the sun, instead of from photosynthesis or a break-down of food as organisms must do today...