5x10" 









/ 



- 



- 





/. 



• 



- 



y 



ooocm o^ • 



/ t 







- 



i'/ 









■ 













/ 







D.mm 



symbol 



0.55 



o 









0.21 



• 



1 







0.18 



A 



3x10' 



2a 

 D 



Figure 21. Equilibrium A/D as function of 2a/D. 



The straight line is given by equation (10) 



56 



