London: Taylor and Francis, 1910. Three Quarter Leather. First Edition. viii, 924 pp. 8vo. 13 Plates. Rebound in an exquisite three quarter leather binding with brown leather spine with four raised bands, gold embossed titling on black leather patch titles, marbled paper insets to cover boards. Only indication of ex-library status is a small red ink stamp on verso of title page and verso of last folding plate. Very clean within. Fine.
Robert Millikan (1868-1953), in his first "balanced droplet" experiment using water (before his use of oil), provided the first definitive proof that electric charge is made up of elementary indivisible quantities, and that the charge is not a statistically averaged quantity. From his experiment, the value of e, the electron charge, could be readily determined. For his study of the electronic charge and the photoelectric effect, Millikan won the 1923 Nobel Prize for Physics. Also includes articles by J.J. Thomson, Ernest Rutherford, and others.