218 



Theory of a Non-Conservative Gas 



[CH. X 



VALUES OF C v AT 0C. 



The values of G v given in the first column are not obtained by direct 

 observations on G v , but have been arrived at by using experimental values of 

 Cp in combination with the known value of either the ratio or difference of 

 the two specific heats. There is only one method of determining C v directly, 

 namely by the use of Joly's steam calorimeter, and the results of these 

 experiments are hardly suitable for our present purpose. 



Values of C p . 



264. Since we have obtained the formula 



' 



it appears that this table contains material for the calculation of C p . It is 

 of interest to calculate C p in this way, and to compare the results with those 

 obtained by direct experiment. This is done in the following table, the 

 experimental values being Regnault's values as quoted in a table in Travers' 

 Study of Gases, p. 267. 



* Meyer, Kinetic Theory, p. 295. 

 t ibid. p. 293. 



