4 8o 



Tables 587-589 



TABLE 587. — 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. 1 ' vol. 29. 



TABLE 588. — Dispersion of Kerr Effect 



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

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



TABLE 589. — Dispersion of Kerr Effect 



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



See also Ingersoll, Phys. Rev. 35, p. 312, 1912, for "The Kerr Rotation for Transverse Magnetic Fields,'' and 

 Snow, 1. c. 2, p. 29, 1913, " Magneto-optical Parameters of Iron and Nickel." 



Smithsonian Tables. 



