STANDARDIZATION AND EFFICIENCY OF THE FOG CHAMBER. 



2 7 



from each of the groups of values specified. The mean results are: in 

 part V, n 4,540,000; in part VI, = 3, 430,000. 



Knowing Wy.the series of data for nucleation given under n\ io~ 3 , table 

 ii follow. From these the diameter io 4 d= iggn~ 113 of fog particles and 

 the apertures 5 = 0.004/6? are finally computed. In other words, n and d 

 are the data obtained in view of the occurrence of geometric series of 

 nucleations with allowance for subsidence. 



$0,60 



W.SO 



10,40 



0,30 







FIGS. 5, 6, 7. Charts for mercury light, including measurements of the aperture of 

 the disks s', of the aperture of the inner edge s", and of the aperture of the outer 

 edge s'", of the first green ring, in terms of the number z of the partial exhaustion. 

 Vivid greens marked g, greenish g'; dull not marked. Apertures 5/30 often displaced 

 vertically for clearness. 



