204 CONCERNING THE EFFECT OF GKAVITY 



Let 3> (x) = (A o X A i Cos y x + A 2 Cos . 



where A m = & (,,-) Cos -- dx 



where A = -* x dx. 



Let (a) be the difference in concentration between the initial and 

 final at the plane PM, which is of course equal to that at the 

 plane NQ 



Then at time T = o 



CL3 



<|> (a;) = a from o to / 



_ 3 a f rom / to 2/ 



I f l / ^ax^ tmr 



/. A =--/ l --- -i Cos # 



r^o \ i ; / 



. 

 Cos 



Sin 



mTT 



^ mTT I 2 WITT 



7T 



2a _ / _ COS m-TT 4- COS O + COS 2?W7T - COS 7717T I 



2 ?T 2 V 



= o when "m" is even 



Sa 

 = - when "w is oaa 



