l62 



Table 146. 

 VOLUME OF PERFECT CASES. 



Values ot 1 + . 00367 «. 



The quantity i + .00367 i gives for a perfect gas the volume at i° when the pressure 

 is kept constant, or the pressure at f when the volume is kept constant, in terms 

 of the volume or the pressure at 0°. 



(a) This part of the table gives the values of i + -00367 1 for values of t between 0° 

 and lor' C. by tenths of a degree. 



(b) This part gives the values of i + -00367 < for values of t between — 90° and -\- 1990° 

 C. by 10° steps. 



These two parts serve to give any intermediate value to one tenth of a degree by a sim- 

 ple computation as follows: — In the {b) table find the number corresponding to 

 the nearest lower temperature, and to this number add the decimal part of the 

 Dumber in the {a) table which corresponds to the difference between the nearest 

 temperature in the (b) table and the actual temperature. For example, let the 

 temperature be 682°. 2 : 



We have for 680 in table {b) the number .... 3.49560 



And for 2.2 in table (a) the decimal .00807 



Hence the number for 682.2 is 3-50367 



(C) This part gives the logarithms of i + . 00367 /for values of t between — 49° and 



+ 399° C. by degrees, 

 (fl) This part gives the logarithms of i -f- .00367 1 for values of t between 400° and 1990° 

 C. by 10° steps. 



(a) Values of 1 + .00367 1 for Values of t between 0^ and 10° C. by Tenths 

 of a Degree. 



Smithsonian Tables. 



