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CHANGING RELAY #1

SOURCE: Shimizu [1], page 187

COMMENTS: This type of composition is put between two color layers in a star to create the illusion that all the stars change their colors clearly and simultaneously in spite of slight deviations in manufacture.

PREPARATION (parts by weight):

CHEMICALPERCENT/PARTSAMOUNT
Potassium perchlorate0.350
Potassium nitrate0.350
Hemp coal OR Paulownia coal0.240
Soluble glutinous rice starch0.060
Total