"The Origin of the Cosmic Rays" in Physical Review.

R.A. Millikan and G.H. Cameron, "The Origin of the Cosmic Rays" in Physical Review, second series, vol 32 no. 4, October 1928. The Millikan appears on pp 533-557 in the monthly issue of pp 533-705.[++] Extracted from a larger bound volume, neatly, now having a nicely-done cloth spine to hold the issue together. VG copy save for three pinholes in the first page of the issue. [++] In his experiments in 1928 with G.H. Cameron (following several years of other work on the origins of cosmic rays) Millikan (who coined the term "cosmic rays" in 1925 though the high-energy particles themselves were discovered in 1912 by Victor Hess) measured the charge of cosmic rays and their affect o the atmosphere and theorized that they were high-energy particles with origins outside the solar system, rather than being of solar origin. (Hess received the 1936 Nobel Physics for this discovery (shared with C.D. Anderson, who discovered the positron) while Millikan received the Physics prize in in 1923 for his work on the elementary charge of electricity and on the photoelectric effect.) $150.…