[178] Nichols and Tear, ibid., 1923. [179] J. J. Thomson, Electricity and Matter, p. 9. [180] Phys. Rev., II (1913), 109. [181] Ann. d. Phys. (4), VIII (1902), 149. [182] Drude, Lehrbuch der Optik (1906), p. 472. [183] Phil. Mag., XXXII (1916), 188. [184] Radioactive Substances and Their Radiations, p. 288. [185] Millikan, Phys. Rev., XVIII (1921), 236. [186] Page, Amer. Jour. Sci., XXXVI (1913), 501; Hennings and Kadesch, Phys. Rev., VIII (1916), 217. [187] Zeitschrift für Physik, 4 (1921), 46. [188] Zeitschrift für Physik, 10 (1922), 185. [189] This was first called to my attention by Dr. Epstein, of the California Institute. [190] A. H. Compton, Phys. Rev., XXI (1923), 483, 715; XXII (1923), 409. [191] P. A. Ross, Proc. Nat. Acad., VII (1923), 246. [192] Duane and Clark, ibid., February and March, 1924. [193] Becker et al., Proc. Phys. Soc., April 26, 1924; Phys. Rev., June, 1924. [194] Proc. Nat. Acad. Sci., IX (1923), 158; Compton, ibid., p. 359. [195] Ibid., 1924. [196] Ibid. [197] See Proc. Nat. Acad. Sci., III (1917), 236; also Phil. Mag., July, 1917. [198] Lamb, Hydrodynamics, 1895, p. 533. [199] Comptes Rendus, CXLVI (1908), 530. [Pg 287] INDEX OF AUTHORS Aepinus, 12, 14 Ampere, 20, 21 Aristotle, 9 Arnold, 95 ff., 124 Avogadro, 30, 183, 261 Bacon, 8, 9 Bär, 173, 181 Balmer, 210, 283 Barkla, 196, 199 Barnett, 212 Becker, 259 f. Begeman, 57 Blake, 214 Bodoszewski, 145, 147 Bohr, 210, 211, 213 f., 221, 223, 244, 248, 282 Boltwood, 160 Boltzmann, 81, 261 Bowen, 143, 203, 220, 248 Bragg, 139, 189, 197 Brown, 145 Bucherer, 188, 214, 274 Campbell, 27 Carbonelle, 145 Cario, 256 Clark, 246, 259 Clausius, 8 Compton, 245, 236, 257 ff., 260, 284 Coster, 221, 223 Coulomb, 32 Crookes, Sir William, 24, 41 Cunningham, 90, 163, 167 Dalton, 2 Davis, 247 De Broglie, 148 f., 130, 132, 161 f., 198, 199, 200, 231, 246 De Haas, 212 Delsaulx, 143 Democritus, 2, 6, 8, 9, 15 Derieux, 135, 178 De Watteville, 148, 161 Drude, 251 Duane, 214, 246, 239, 260 Dufay, 11 Ehrenfest, 260 Ehrenhaft, 148, 162 f., 164, 166 ff., 168 f., 170, 171 ff., 173 f., 180, 181 Einstein, 146, 147, 155, 175, 180, 188, 212, 237 f., 244 f., 247 f., 253 256, 268 Ellis, 246 Enright, 46 Epicurus, 6 Epstein, 212, 219, 220, 236, 260 Erikson, 38 Eyring, 136 Faraday, 12, 13, 16, 17, 19, 24, 25, 27, 28, 29, 38, 138, 237 237 f., 249 Fletcher, 129, 131 f., 153 ff., 164, 168, 169, 172 Foote, 247 Fowler, 142 Franck, 38, 39, 40, 126 f., 134, 247, 256 Franklin, Benjamin, 11 ff., 14, 13, 20, 24 Gaertner, 117 Geiger, 158, 159, 180, 193, 196, 280 Gerlach, 133 f. Gibson, 94 [Pg 288] Gilbert, 11 Gilchrist, 93, 94