TABLES 487, 488. 385 



TABLE 487. Transverse Oalvanomagnetlc and Thermomagnetlc Effects. 



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. 



h ' = difference of potential produced; T= difference of temperature produced; /= primary 



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

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



Hall effect (Galvanomagnetic difference of Potential), E = A' 



D 



Ettingshausen effect ( " " 



Nernst effect (Thermomagnetic " 

 Leduc effect ( " " 



" Temperature), T= T D 



j* 

 " Potential), E- 



" Temperature), T=Sf/B^ c 



TABLE 488. Variation of Hall Constant with the Temperature. 



1 Barlow, Ann. der Phys. 12, 1903. s Everdingen, Comm. Phys. Lab. Leiden, 58. 



* Traubenberg, Ann. der Phys. 17, 1005. * Melting-point. 



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

 all observers and gives extensive bibliography. 



SMITHSONIAN TABLES. 



