Note 7 — § 1. General assumptions.
Reading edition
Einstein and Haas, Verh. d. D. Phys. Ges. xvii. p. 152 (1915). That such a mechanical rotational effect was to be expected on the electron theory of magnetism was pointed out several years ago by O. W. Richardson, Phys. Review, xxvi. p. 248 (1908). Richardson tried to detect this effect but without decisive results.