The Electrical Layers of the Atmosphere


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”.


  1. 1

    NATURE, Jan. 31, 1931, p. 167.

  2. 2

    NATURE, Sept. 12, p. 394, and Sept. 26, p. 480.

  3. 3

    Reynolds, NATURE, May 30, 1925, p. 836.

  4. 4

    Reynolds, Jour. Soc. Chem. Ind., Mar. 28, 1930, p. 168.

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REYNOLDS, W. The Electrical Layers of the Atmosphere. Nature 127, 704 (1931).

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