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863 
TABLE OF PRINCIPAL NOTATION 
face of piston or pistons, also area of piston. 
A at time, t = 0, also face of viston number 0. 
face of niston number 1. 
face of block in which pistons move. 
- B at time, t = 0. 
Roc ak = Be! 
length of piston. 
"effective" mass of niston and copner ball or pellet. 
= instantaneous total vressure at center of orifice. 
mean value of incident pressure over face of orifice. 
maximum value of incident vressure at a given point. 
= radius of piston, also Reynolds number. 
= radius of block. 
= infinite plane containing A, and Bo: 
ete BR AC 
= acceleration of fluid at eurface of T. T can be snecialized 
to A, B, or C,. 
= distance of point from axis of orifice. 
= velocity of sound in water. 
velocity of sound in block. 
thickness of block. 
dy. = thickness of effectively infinite, rigid block. 
d= 
8 
thickness of effectively infinite, soft block. 
exvlosion. 
