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Black powder is a unstable substance, that is why it works so well to move projectiles. It takes very little to ignite black powder, a match will ignite it, compression will ignite the powder as well, so won't stimulation with electricity.
Black powder is used in the mining industry, demolition industry, construction industry, fire arm industry, firework industry, and in the military.
Here is black powder in use:
fireworks:
Mining:
Demolition:
construction:
Military and Fire arms:
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