706 



BELL SYSTEM TECHNICAL JOURNAL 



TABLE II 



Admittance Y(p\, pi) 

 Illustrative System 

 Cause and Effect 



Cause: Unit Impulse 

 Effect: ^n^dU^YiPu P2) 



37 



Y{pup2) = COS ItiPi' + p2~)l 



Transverse oscillations of infinite elastic 

 plate, X and y axes in the plate. Cause: 

 Initial displacement. Effect: Displace- 

 ment perpendicular to plate at time / of 

 point whose coordinates are x and y. 



1 . A-2 + y^ 



— sm ^- 



4irt 4t 



759, 758 



38 



Y(Pup2) =exp(-2V|K' + Kl) 



Velocity potential function in semi 

 infinite incompressible fluid, x and y 

 axes in surface of fluid, z extending 

 down, z ^ 0. Cause: Velocity potential 

 at surface, s = 0. Effect: Velocity po 

 tential at point {x,y,z). 



1 



iw {x' + / + zy^ 



867, 919 



39 



Y{pu pd = 



exp (- zV|pi^ + Pi'l) 

 ^Ipi'-i- Pi'l 



1 



ItT Vx2 + y + 



Newtonian potential function in semi- 

 infinite solid, X and y axes in face of 

 solid, 2 extending into solid, 2 = 0. 

 Cause: Normal potential derivative at 

 surface, z = 0. Effect: Potential at 

 point {x, y, z). 



868, 918 



