257 
Sec. 21 -46- 
9.00 
Fig. 20-1 
8.50 
21. Some Remarks about Work 
in Progress 
At present the work described in this report is being carried further 
and it is hoped to be able to extend it to three dimensions. The question 
of the dying away of shock waves is being studied now and it is hoped 
ultimtely to be able to calculate to a practical degree of accuracy all 
the phenomena associated with an explosion. 
