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From LiveScience.com:
Vaseline, food preservatives, paper and the chemical in rat poison help make the colorful shapes and sounds.
When ooohing and ahhhing at the brilliant colors and surprising patterns of a fireworks display, you might take a moment to admire the awesome display of chemistry and physics too.
Despite the fantastic aerial display of Dragon's Lairs and Sky Monkeys, the inside of an unlit fireworks device doesn't look like much. But there is some strange stuff in there.
The handmade shell contains a powdery concoction of chemicals that produce the bangs and the whistles, as well as the pretty effects. Tubes, hollow spheres, and paper wrappings work as barriers in the device. More complicated shells are divided into even more sections, which controls the timing of secondary explosions once the rocket is airborne.
More after the jump.
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Re: The Strange Stuff Inside Fireworks
