Table 252. 

 PROPERTIES OF STEAM. 



HetrlQ Measure. 



241 



The temperature Centigrade and the absolute temperature in degrees Centigrade, together with other data for steam 

 or water vapor stated in the headings of the columns, are here given. The quantities of heat are in therms or calo- 

 ries according as the gramme or the kilogramme is taken as the unit of mass. 



Where v is taken in litres the pressure is given per square 



* Where A is the reciprocal of the mechanical equivalent of the thermal unit. 



. // — (/i + A/^i) internal-wnrk pressure 



V mechanical equivalent of heat 



decimetre, and where v is taken in cubic metres the pressure is given per square metre, — the mechanical equivalent 

 being that of the therm and the kilogramme-degree or calorie respectively. 



Smithsonian Tables. 



