36 



NOTATION 



A strength of a simple source 



A. J A., , etc. coefficients In expansion of velocity - 



° -*■ potential 



a radius of bubble 



a time average of a 



a radius at which gas oresaure equals p , 



1 " =« 



a , a . . a maxlmtuH and nlnlmum radius, and average 



ma::- min' mean ^^ ^j^^^^^ 



B (m. n) Incomplete beta function 



X 



B , etc. coefficients in expansion of velocity - 



-'■ potential. 



C, , etc» coefficients in expansion of velocity 



potential 



c velocity of sound in water 



c velocity of sound In gas in bubble 



g 



D distance of receiver from bubble 



E field strength in equivalent 



electrostatic problem 



e charge of bubble In equivalent 



electrostatic problem 



P defined by eq. (9), Appendix 2. 



G potential energy of gas In bubble 



g acceleration of gravity 



h distance of center of bubble from 



plane free or rigid surface. 



K thermal conductivity 



L length of a cylinder; any 



characteristic length 



P. order of spherical harmonic 



