BRIDGMAN. — MERCURY UNDER PRESSURE. 



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PRE55URE.KGM/CM'X 10."' 



Figure 12. The difference between the isothermal and the adiabatic com- 

 pressibilities as a function of the pressure. 



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PRE5SURE,KGM/CM'XIQ' 



Figure 13. The heating effect of compression; that is, the rise of tem- 

 perature in degrees centigrade for an adiabatic rise of pressure of 1 kgm. 





m. 



c„ 



The numerical values of this quantity are shown in Figure 13. The in- 

 itial rise of temperature is, therefore, about 2°. 5 for 1000 kgm. The rise 

 of temperature becomes less at higher pressures, the rate of decrease also 



VOL. XLVII. 



25 



