TABLES 332, 333. 307 



TABLE 332. Transverse Galvanomagnetic and Thennomagnetic Eifects. 



Effects are considered positive when, the magnetic field being directed away from the observer, 

 and the primary current of heat or electricity directed from left to right, the upper edge of the 

 specimen has the higher potential or higher temperature. 



= difference of potential produced; T= difference of temperature produced; 7= primary 



current; ^ = primary temperature gradient; B = breadth, and D = thickness, of specimen; 

 H= intensity of field. C. G. S. units. 



TTT 



Hall effect (Galvanomagnetic difference of Potential), E = R-j^ 

 Ettingshausen effect ( " " 



Nerast effect (Thermomagnetic " " Potential), 



dt 

 Leduc effect ( " " Temperature), T= SHB-r- 



TTT 



" Temperature), T=P~p- 

 dt 



TABLE 333. Variation of Hall Constant with the Temperature. 



i Barlow, Ann. der Phys. 12, 1903. * Everdingen, Comm. Phys. Lab. Leiden, 58. 



* Traubenberg, Ann. der Phys. 17, 1905. * Melting-point. 



Both tables taken from Jahn, Jahrbuch der RadioactivitSt und Electromk, 5, p. 166; 1908, who has collected data Of 

 all observer* and gives extensive bibliography. 



SMITHSONIAN TABLES. 



