184 



N = c vT/wo-^o ; ^^ represents the ratio of the adlabatlc volume 



elasticity of water to that of the gas in the bubbles when 

 under hydrostatic oressure 



P Extinction coefficient (the amplitude of a pressure wave de- 



creases by a factor e'^"^ , where e is the Napierian base, 

 in going a distance equal to one wave length as measured 

 In homogeneous water) 



u Frequency times 2n of sinusoidal waves 



o)q Frequency times 2n for free small oscillations of a bubble 



K Coefficient of reflection 



PERSONNEL 



This report was written by Professor E.H. Kennard; the nec- 

 essary numerical Integrations and the plotting of certain figures were 

 done by S. Pines. 



