Table 2 17 



APPROXIMATE ABSOLUTE, CENTIGRADE, FAHRENHEIT, AND REAUMUR 



TEMPERATURE SCALES 



•The Ninth General Conference on Weights and Measures, October 1948, gave the degree of temperature 

 the designation of degree Celsius in place of deqree centigrade. See Stimson, H. F., The international tem- 

 perature scale of 1948, Nat. Bur. Stand. Journ. Res., vol. 42, p. 209, 1949, and Amer. Journ. Phys., vol. 23, 

 p. 614, 1955. 



t R. T. Birge, Rev. Mod. Phys., vol. 13, p. 233, 1941. 



t In 1954, the thermodynamic temperature was denned so that 273.16°K corresponds to the triple point, yield- 

 ing the value 273.15°K as equivalent to 0°C. Dixieme Conference Generale Poids et Mesures, Compt. Rend., 

 1954. 



SMITHSONIAN METEOROLOGICAL TABLES 



