ADIABATIC CHANGES OF MOIST AIR NEUHOFF 



Table F 



469 



The values for a given in table F are taken from tables 5 and 6 

 with the argument t. The whole computation is best made in a 

 systematic tabular form as in Table F. For comparison with other 

 methods we give in Table G the corresponding results deduced from 

 the diagram of Hertz. 



Table G 



In these tables the values of the pressure show differences of 

 nearly 8 millimeters in the condensation stage; the differences in 

 the altitudes exceed 200 meters and to this extent the results of the 

 Hertzian diagram are uncertain. This error has been introduced 

 by the neglect of the vapor pressure in his construction of the 

 adiabats of the rain stage and snow stage ; but this can be eliminated 

 by a subsequent correction that can be applied to the values 

 deduced graphically by subtracting from the final value the 

 difference of the vapor pressures corresponding to the appropriate 

 temperatures. We thus obtain 2 95 mm instead of 305, and in this 

 way the value obtained from the Hertzian diagram becomes too 

 small by only 2.5 mm . 



§10. 



ADIABATIC TABLES 



Tables 1, 3, 4, 5, and 6, given in the Appendix, serve as auxiliary 

 for the computation of the adiabatic changes of condition of moist 

 air. Table No. 2 offers a numerical auxiliary for the computation 



