William Jackson Humphreys (February 3 1862, Gap Mills, West Virginia-November 10 1949, Washington, D. C.) was an American physicist and atmospheric researcher. Humphreys studied physics at Washington & Lee University in Virginia and at Johns Hopkins University, where he got his Ph.D. in 1897. He studied under H. A. Rowland, et al. He worked in the fields of spectroscopy, atmospheric physics and meteorology. Wikipedia
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