Physics: Millikan and Cameron
نویسندگان
چکیده
layer is not altered by a five-hundred fold change in the surrounding pressure. Further evidence for believing that a condition characteristic of the metal itself has been reached is furnished by the fact that the photoelectric sensitivity of an outgassed specimen remains constant for twelve hours after heat treatment. The work of Davisson and Germer9 on electron reflection from nickel is also against such a point of view. They found that it takes several hours for the characteristic reflection to be obscured by the accumulation of gas on the surface. The work is being continued and a more complete report will be published soon. In conclusion, the author desires to acknowledge his appreciation to Dr. C. E. Mendenhall, under whose direction the work was carried on. 1 DuBridge, Phys. Rev., 29, 451 (1927). 2 Warner, Proc. Nat. Acad. Sci., 13, 56 (1927). 3Kazda, Phys. Rev., 26, 643 (1925). 4Dushman and Found, Phys. Rev., 23, 734 (1924). 6Burgess and Kellberg, Bull. Bur. Stds., 11, 457 (1914-15). 6 Welch, Abstr. 19, N. Y. Meeting Amer. Phys. Soc. (1928). 7Burgess and Scott, Bull. Bur. Stds., 14, 15 (1918). 8 Goetz, Phys. Zeit., 24, 379 (1924). 9Davisson and Germer, Phys. Rev., 30, 705 (1927).
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