320 



BRIDGMAN. 



"0° 10° 20° 30° 40° 50° 60° 70° 80° 90° 100<* 



Temperature 

 Gold 



Figure 19. Gold. Thermal E.M.F. of a couple composed of one branch 

 of imcompressed metal, the other at the pressure in kg. /cm.- indicated on 

 the curves, the junctions being at 0°C and the temperature plotted as abscissae. 



0° 20" 



Itr W 80 

 Temperature ' 



20° 



Gold 



40° 60° 80" 

 Temperature 



100° » 



Q 



FiGXTRE 20. Gold. On the left, the heat absorbed by unit quantity of 

 electricity in flowing from uncompressed metal to metal compressed to the 

 pressure indicated on the curves, as a function of temperature. On the right, 

 the excess of Thomson heat in metal compressed to the pressure indicated on 

 the curves over uncompressed metal, as a function of temperature. 



