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Why you never see brilliant blue fireworks

What’s in a firework? I’m sure you know some of it at least — a bit of gunpowder, a dash of color-changing chemicals, and a propellant to launch them into the air, right? Well, the chemistry behind fireworks is a lot more complex. Even tiny details like color are fragile enough to restrict firework makers. Now, see why blue varieties of fireworks are a rare breed to see.

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