Word: menzel
(lookup in dictionary)
(lookup stats)
Dates: during 1940-1949
Sort By: most recent first
(reverse)
...Push. Another stubborn mystery that got the theory treatment: cosmic rays-the enormously powerful particles that slam into the earth's atmosphere. Cosmic rays, said Drs. Donald H. Menzel (Harvard) and W. W. Salisbury (Collins Radio Co.), may be "accelerated particles" from a natural cyclotron whose power source...
This is what may happen, said Menzel & Salisbury, in the great "vacuum chamber" (space) outside the earth's atmosphere. They start with the assumption that disturbances (such as sunspots) on the sun's surface send out powerful radio waves about a million miles long which set up "transient fields" in space. These pick up wandering protons and give them a mighty, long-lasting push. When the protons hit the earth's atmosphere, they have enough energy to rate as cosmic rays...
...Menzel has won this prize three times out of the six that it has been awarded since 1926. He won the first prize offered in 1926 when associated with the Lick Observatory at the University of California. In 1828 he shared it with P. R. Gerasimovie of the Harvard College Observatory for a paper on which they collaborated...
Garrett Birkhoff '32, professor of Mathematics; Howard W. Emmons, associate professor of Engineering Science; Wassily W. Leontief, professor of Economics; Donald H. Menzel, professor of Astrophysics; Julian S. Schwinger, professor of Physics; Julian S. Schwinger, professor of Physics; Samuel A. Stouffer, professor of Sociology and Director of the Laboratory of Social Relations...
...known that the temperature of the radiation from the surface of the sun is approximately 6,000 degrees centigrade," Menzel and Goldberg pointed out, "But the condition of atoms in the sun's outer atmosphere indicates that temperatures of over 1,000,000 degrees centigrade prevail at some distance from the sun. This and other indirect evidence suggest that there is an unexpectedly large quantity of ultra-violet radiation from the sun's surface...