with the witT lo^.d (and assuming mtinbr.nnc motion of the type of equation 15) o" must be 

 replaCtjd by a * 0.7626 p-i . Applying the formula to a plate of steel, 7 inch in thickness 



and 2 feet in radius we find that T = O.Oie second and for 1-irger plates the time is still 

 greater. We may safely concluJe th5t for moderately 1 irje plates the influence cf the duration 

 of the axpljsive wjve is '.-nly slight. 



Appendix 



