Having a Blast: Fireworks combine science and technology

Julie Walker of CCW Fireworks toward Como stocks her stand with popular items such as  artillery shells and Black Cats in preparation for the 2019 New Year celebration.  File photo
Fireworks are probably one of the first things that come to mind when one thinks of the Fourth of July, but many people may not realize how much science and technology goes into those pretty sparks in the sky. Fireworks date back to the early ninth century medieval Chinese Tang Dynasty, where fireworks were used in celebrations. The Chinese people reportedly believed fireworks could expel evil…

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