Abstract
A method is described, involving the use of the Jones and Lamson Pedestal Comparator, for estimating velocities of detonation from the photographic record obtained on a rapidly moving film. The increase in detonation velocity in cavitated charges is accompanied by the appearance of a luminous effect which moves down the cavity approximately 1.6 times faster than the detonation wave. Both the luminous effect and the increase in detonation velocity disappear when the cavity is filled with water.
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