586 



BRIDGMAN. 

 TABLE I. 



Indium. 



V 20° 40° 60° I 

 Temperature '•§ » 



U 



:.0.105 



•0,I00q„~ 20^ W 60 

 Temperature 



6 8 10 12 



Pressure. Kg./Cm.' X 10' 



Indium 



FiGUBE 3. Indium, results for the measured resistance. The deviations 

 from Unearity are given as fractions of the resistance at kg. and 0°C. The 

 pressure coefficient is the average coefficient between and 12000 kg. 



The average temperature coefficient found above, extrapolated for 

 the range 0° to 100°, is 0.00407. Thi.s is considerably lower than the 

 only other value I have been able to find, 0.00474 by Erhard.^ 



The general character of the results for indium is as follows. The 

 average pressure coefficient of resistance increases linearly with tem- 

 perature, but the increase is less than one third as much as the increase 

 of resistance. The departure from linearity, on the other hand, 

 increases at higher temperatures more rapidly than the initial resist- 

 ance. This means that if resistance is plotted as ordinates against 

 pressure for each of several temperatures and then if the scale of the 



9 T. Erhard, Wied. Ann. 14, 504 (1881). 



