188 



THOMSON ON CARNOT'S 



(2) And that the quantity of heat evolved in 

 all circumstances, when the temperature of the 

 gas is given, is proportional to the amount of work 

 spent in the compression. 



51. The expression for the amount of work nec- 

 essary to produce a unit of heat is 



Ml + Et) 



E 



and therefore Kegnault's experiments on steam 

 are available to enable us to calculate its value for 

 any temperature. By finding the values of yu at 

 0, 10, 20, etc., from Table I., and by substi- 

 tuting successively the values 0, 10, 20, etc., for f, 

 the following results have been obtained : 

 TABLE OF THE VALUES OF 



