The Challenge: Make fireworks
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How are Pinwheels made?
In the 4th century,
St. Catherine of Alexandria was tortured on a wheel (they used all sorts
of worrying implements in those days) giving rise to the traditional name
"Catherine wheel" for this rotating device. In the U.S., they
are usually called pinwheels.
consists of a number of rocket-like motors mounted on a wheel. Each one
burns to provide both sparks and thrust with the exhaust gases, spinning
the wheel around. The fast motion of the wheel adds to the effect, throwing
out sparks as it spins.
Detonating the fireworks