308] Dependence of Viscosity on Temperature 



255 



FIG. 20. 



These considerations, then, fully account for the apparent variation of 

 a with the temperature. Full accounts of experiments to determine the 

 variation of K with the temperature will be found in Meyer's Kinetic Theory 

 of Gases*. From three sets of observations I have calculated the following 

 table of values for ^<r, the mean effective radius of a molecule of air. The 

 first column gives the temperature in degrees centigrade, the second gives K 

 in terms of K O> the value of K at C. 



* pp. 215221. 



