334 



Tables 388,389. 

 TABLE 388- — Transverse Galvanomagnetlc and Tliermomagnetlc 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. 



£= difference of potential produced; 7"= difference of temperature produced; /= primary 



current; — = primary temperature gradient; j5=: breadth, and Z)= thickness, of specimen; 

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



Hall effect (Galvanomagnetic difference of Potential), E =^ ^~7) 



-.HT 



Ettingshausen effect ( " 



Temperature), 7^= P jT 



Nernst effect (Thermomagnetic 

 Leduc effect ( " 



dt 



" Potential), E=QHB^ 



dt 



" Temperature), T^^SHB-j- 



Substance. 



Tellurium 

 Antimony 

 Steel . . . 

 Heusler alloy 

 Iron . . . 

 Cobalt . . 

 Zinc . . . 

 Cadmium 

 Iridium . . 

 Lead . . . 

 Tin. . . . 

 Platinum . . 

 Copper . . 

 German silver 

 Gold . . . 

 Constantine . 

 Manganese . 

 Palladium . 

 Silver . . . 

 Sodium . . 

 Magnesium . 

 Aluminum . 

 Nickel . . 

 Carbon . . 

 Bismuth . . 



TABLE 3€9. — Variation of Hall Constant wltb the Temperature. 



1 Barlow, Ann. der Phys. 12, 1903. ' Everdineen, Comm. Phys. Lab. Leiden, 58. 



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



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

 all observers and gives extensive bibhography. 



Smithsonian Tables. 



