Tables 381 -383. 33 1 



TABLE 381. — Values of Kerr's Constant.* 



Du Bois has shown that the rotation of the major axis of vibration of radiations normally reflected from a magnet is 

 algebraically equal to the normal component of magnetization multiplied into a constant K. He calls this con- 

 stant K , Kerr's constant for the magnetized substance forming the magnet. 



* H. E. J. G. Du Bois, " Phil. Mag." vol. 29. 



Field Intensity= 10,000 C. G. S. units. (Intensity of Magnetization =r about 800 in steel, 700 to 800 in cobalt, 

 about 400 in nickel). Ingersoll, Phil. Mag. 11, p. 41, 1906. 



TABLE 383. — Dispersion of Kerr Effect. 



Foote, Phys. Rev. 34, p. 96, 1912. 



See also Ingersoll, Phys. Rev. 35, p. J12, 1912, for "The Kerr Rotation for Transverse Magnetic Fields," and 

 low, 1. c. 2, p. 29, 191 3, " Magneto-optical Parameters of Iron and Nickel." 



Snow 



Smithsonian Tables. 



