473 



OI5 



OIO 



05 



I 



OIO 



c 05 



/ 



\ 



\ 



/ \ 



/ \ 



/ 



3t' jbovp the charge 



O 10 



005 



4U 4bovr the chjrq* 



OOSi 



S't dbovr the chdrqe 



12 3 



DISTANCE OF THE CHARGE FROM THE BOTTOM - Feet 



Fig (3 IMPULSES IN THE z'bUBBLE iVaVES aT POiN-^S 2.3,4, AND 5tt 

 ABOVE THE CHAHGE FOR VARIOUS DISTANCES OF THE 

 CHARGE FROM THE BOTTOM 



