LARGE AND SMALL SOURCES IN AN IDEAL MEDIUM 



P L 



DB 

 ABOVE 

 DYNES ^ DYNE 



DB 



ABOVE 



0.0002 



DYNE 



WATT WATT 



OB 

 ABOVE 



CM' 



loV 



lATM 



10 = 



10' 



10'- 60 - 



10 



10 



10- 



CM' 

 120 T 



100 - 



CM* YARDS* CM* CM* 



00 



40 - 



20 - 



10-'.- -20 - 



-40.. 



lO"*- -60 ■ 



leo 



160 



140 - 



120 



100 - 



60 f- 

 •74 



60 - 



40 - 



20 ■ 



0-^ 



I0*T 



10 



I T Ot 



10"^=- -20-. 



KJ"*- -40 



10"*- -60 



10- 



0.6 4 



-80 - 



lO"'*^- -100 - 



-122- 



I0""5- -1404- 



K)-'"- -160- 



I0''°-- -180 



•0-"i lo-*'! -200 



COMPARISON OF UNITS FOR UNDERWATER SOUND, 



153 



