I was at an event with a giant, choreographed firework show. Like they literally brought in Japanese masters of pyrotechnics for it. It was beautiful and all kinds of shapes like flowers and hearts and stuff.
And afaik they do different colours by burning different elements but how do they do specific shapes and like timings? Like one piece of firework having several different layers and colours and stuff. How does it not all explode at the same time in all kinds of directions?
In: 1125
For shapes, the black powder charge can be shaped so that the ‘stars’ (glowing colored bits) are propelled outwards in specific shapes and distances based on their position around it… and for multiple concentric layers of colors, it’s one color of stars surrounding the others. Color changes and other effects can be created by how the stars have those different chemicals layered in them.
https://www.entertainmenteffects.co.uk/how-firework-shells-create-different-shapes/
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