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Further experiments on the uniformity of distribution of the cosmic radiation

Millikan, Robert A. (1932) Further experiments on the uniformity of distribution of the cosmic radiation. Physical Review, 39 (3). pp. 391-396. ISSN 0031-899X. doi:10.1103/PhysRev.39.391.

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More careful and prolonged observations on the small, daily variation before reported in the measured intensities of the cosmic rays, the new observations being made under such conditions as to eliminate the possibility of a slight temperature effect suggested by Bowen and Millikan's recent explanation of ionization-pressure relations in high-pressure electroscopes, yield the definite result that within the limits of the author's present observational uncertainty which is of the order of a third of a percent, the sun has no direct influence on cosmic-ray intensities. New evidence is presented that if observed and apparently systematic variations of the order of a third of a percent are in fact real they are best interpreted as the result of small changes in the blanketing effect of the earth's atmosphere due to air currents.

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Additional Information:©1932 The American Physical Society. Received 8 December 1931.
Issue or Number:3
Record Number:CaltechAUTHORS:MILpr32b
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:6621
Deposited By: Tony Diaz
Deposited On:15 Dec 2006
Last Modified:08 Nov 2021 20:35

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