EFFICIENCY OF FOG CHAMBER. 



37 



400 



360 



320 



aeo 



240 



zoo 



160 



120 



c?. 



26 30 34 38 



Fig. 22 Efficient nucleation (n) found in dust-free air energized or not by radium or 

 the X-rays, as stated, from different distances (D), at different exhaustions (dp). 

 Fog chamber with pipes i J-inch bore, 2 feet long. Table 13. 



