First, the author studied the law of motion of stars in the air. The velocity of stars at distant points from the shell burst was then related to the initial velocity of each star. The conditions that produced these initial velocities were investigated, and from this information, equations useful in the designing of shells were developed.
Ref: Selected Pyrotechnic Publication of Dr. Takeo Shimizu, Part 4, pp 48-125
(Sh4_48)
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