NUCLEATION CONSTANTS OF CORONAS. 



59 



33. The violet and green coronas. The object of the series of experi- 

 ments made at very low exhaustions (dp = 10) and compared with a series 

 for high exhaustions (dp = 20. 5) was an estimation of the importance 

 of the time effect and of the convective effect in causing loss of nuclei. 

 If the latter series be reduced to the former by modifying the constants 

 in terms of pressure and temperature the coincidence of the graphs is 

 complete, as shown in fig. 19. This indicates that the method of reduc- 

 tion is reliable. 



600 



soo 



4-00 



300 



OO 



100 



UMO 



/ 



19 



-vs 



71 MO 



' 3 



3000 



ZOOO 



1000 



tO 



12 



/4 



16 



18 



20 



Z4- 



FIG. 19. Nucleation n, in terms of the apertures of coronas. Results in tables 



18 and 19 compared. 



TABLE 21. Violet and green coronas, d and s values. 



1 Computed with n'= o. iggs* and y= 0.786, the latter being more in keeping with table 20. 



