CHRISTIAN: THE ACOUSTIC OUTPUT OF EXPLOSIVE CHARGES 



DISCUSSION 



Dr. J. B. Hersey (Office of Naval Research) : We have reviewed 

 the way we make measurements and have had a very exciting discussion 

 of what we do to ourselves or for ourselves when we use explosive 

 charges. 



In recent advanced development work in the United States, we 

 have arrived at the same point that anyone does who tries to make 

 practical, repeated, continuing application of methods which have 

 evolved in an experimental atmosphere. We have no choice but to 

 confirm our measurements in some way. We have to be sure. If the 

 quantity is a varying quantity, we have to know why it is varying and 

 how it is going to vary during the life of the application that we 

 are addressing. This need frequently persists over many years. We, 

 therefore, have to establish standardization procedures for the 

 reliability of the techniques that we use. Dr. Marvin Weinstein 

 has led a rather large group of people in taking a close look at 

 some of these standardization problems. 



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