PROF. MILLIKAN has recently directed attention to a remarkable property of cosmic rays, in his presidential address to the American Association for the Advancement of Science, at Cleveland.1 He observed that “somewhere in the atmosphere below a height of 15.5 km. the intensity of the ionisation within a closed vessel exposed to the rays goes through a maximum, and then decreases”.
NATURE, Jan. 31, 1931, p. 167.
NATURE, Sept. 12, p. 394, and Sept. 26, p. 480.
Reynolds, NATURE, May 30, 1925, p. 836.
Reynolds, Jour. Soc. Chem. Ind., Mar. 28, 1930, p. 168.
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Journal of Modern Physics (2019)