655 
coefficient in C.G.S. units, D is the asymmetry and Q is the 
quantity 
nnn 
I 145 
mid 
T= 9050 
T= 1476 
0 2000 4000 ‚6000 8000 10000 12009 14900Gauss 
—> a i 
Fig. 8. 
Figs. 3 and 4 show the resistance increase, and fig. 5 the Hat. 
effect as functions of the field for various temperatures *). 
The isotherms of the magnetic increase of resistance are of the 
same nature as those for iaz, but the rectilinear portion of the 
curve now begins at 7 kilogauss. Equation (2) also holds in this case 
Ed 
1)-Remembering that RH =~— where Eis the Hatt potential difference, d the 
thickness of the plate, and J the main current, we see that RH is the Haut 
potential difference for d=1 ard J 1. 
