Chapter 1 — Preface

The beauty of fireworks arises from their creation of organized patterns, mainly of fire, that consist of colors, lines and their movement and change in space and time. Chrysanthemum shells, also called ‘warimono’ (which means hard-breaking shell’), produce uniquely beautiful effects by creating patterns resembling chrysanthemums on the background of the sky. Until now, the design of chrysanthemum shells has been based entirely on the manufacturer’s experience and intuition. The purpose this paper is to introduce a more scientific method, using experiments and calculations.

Ref: Selected Pyrotechnic Publication of Dr. Takeo Shimizu, Part 4,  pp 01-01

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