Steel wires are loaded into racks that are dipped twice into a slurry of boric acid, barium nitrate, water, corn starch, iron filings, and aluminum powder. Once they’ve baked in an oven, they’re inspected, measured, and packaged.
From Discovery UK, this low-resolution How It’s Made: Sparklers video walks us through the entire process.
There are more fireworks in the archives.
Updated link.
This Webby award-winning video collection exists to help teachers, librarians, and families spark kid wonder and curiosity. TKSST features smarter, more meaningful content than what's usually served up by YouTube's algorithms, and amplifies the creators who make that content.
Curated, kid-friendly, independently-published. Support this mission by becoming a sustaining member today.