One year ago the writer reported to this Academy the results of some preliminary calculations of the intensities of the three components assumed by Millikan to compose the cosmic radiation, based upon his last published data.1 At that time the Academy was so kind as to set apart a grant for a continuance of this research. Soon afterward, Dr. Millikan informed me that he was engaged upon a more elaborate series of depth-ionization measurements which promised greater precision, and extended the hope that the results would be available by fall. It was, however, not until February that the new data were received, and it was then found that the results would entail considerably more calculation than had been anticipated from the earlier set.
Proceedings of the Iowa Academy of Science
©1931 Iowa Academy of Science, Inc.
Weld, Le Roy D.
"Progress in the Analysis of Cosmic-Ray Observations (II),"
Proceedings of the Iowa Academy of Science, 38(1), 209-212.
Available at: https://scholarworks.uni.edu/pias/vol38/iss1/53