TABLE 332. 



Tables 332, 333. 



-Transverse Galvanomagnetic and Thermomagnetlc Effects. 



307 



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 

 dt 

 current; ^ = primary temperature gradient; .5= breadth, and Z? = thickness, of specimen; 



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



Trr 



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



Ettingshauscn effect ( " 

 Nemst effect (Thermomagnetic 

 Leduc effect ( " 



TTT 



" Temperature), T=P-^ 

 " Potential), E=QHB^ 



" Temperature), T=S//B 



dt_ 



dx 



Tellurium 

 Antimony 

 Steel . . . 

 Hensler alloy 

 Iron . . . 

 Cobalt . . 

 Zinc . . . 

 Cadmium 

 Iridium . . 

 Lead . . . 

 Tin. . . . 

 Platinum . . 

 Copper . . 

 German silver 

 Gold . . . 

 Constantine. 

 Manganese . 

 Palladium . 

 Silver . . . 

 Sodium . . 

 Magnesium . 

 Aluminum . 

 Nickel . . 

 Carbon . . 

 Bismuth . . 



Values of R. 



+400 to Soo 

 4- 0.9 " 0.22 

 +.012 " 0.033 

 4- .010 " 0.026 

 +•007 " 0.0 1 1 

 +.0016 " 0.0046 



+ .00055 



+ .00040 



+.00009 



— .00003 



— .0002 



— .00052 



— .00054 

 — .00057 to .00071 



— .0009 



— .00093 



0007 to .0012 



.0008 " .0015 



—.0023 



— .00094 to .0035 



— .00036 " .0037 



— .0045 " .024 



— .017 



— up to 16. 



P X 108. 



+ 200 



+ 2 

 — 0.07 



0.06 



+0.01 



+0.04 to 0.19 



+ 5- 

 +3 to 40 



Q X 106. 



— 360000 

 +9000 to 18000 

 ■ — 700 " 1700 

 + 1600 " 7000 

 — 1000 " 1500 

 + 1800 " 2240 

 —54 " 240 



up to — 5.0 



—5.0 {>) 

 -4.0 (.?) 



— 90 to 270 



+ 50 to 130 



—46 " 430 



+ 2000 " 9000 

 + 100 



— up to 132000 



.S- X io«, 



+400 



+ 200 



+69 



+39 

 + 13 

 + 13 



+ 5 



—3 

 —41 



—45 



TABLE 333. —Variation of Hall Constant with the Temperature. 



I Barlow, Ann. der Phys. 12, iqo3. 2 Everdinpen, Comm. Phys. Lab. Leiden, 58. 



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



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



all observers and gives extensive bibliography. 

 Smithsonian Tables. 



