III-51 



PHASE VELOCITY 

 (cm/sec) 



FIGURE III- 21 



20 30 



FREQUENCY ( kc ) 



THEORETICAL PHASE VELOCITY 

 (AFTER LAIRD AND KENDIG) 



1.5 - 



VOLUME 

 (iC-CC) 



-U I 1_ 



.04 .08 .12 .16 .20 .24 

 DIAMETER (mm) 



FIGURE III-22 DISTRIBUTION OF FRACTIONAL VOLUME 



FOR VARIOUS BUBBLE SIZES (AFTER FOX, 

 CURLEY AND LARSON) 



S-7001-0307 



