341 



(1.36) P = I pgZ^ -^(a^a)' 



where the value of (a a) Is given by formula (1.30). 



At the time of maximum size the pressure in the bub- 

 ble is 



g 3(1 - 5a^) 



(1.37) P1=|PSZ0 7-2"^ 



8a£ 



Hi 

 >i' - 



