(YouTube link)
Bill Hammack, the Engineer Guy, explains how a smoke detector works. It's pretty geeky, which makes me marvel at the people who designed these things. Smoke detectors are very handy! Every time ours goes off, the kids run downstairs because they know dinner must be ready. -Thanks, Bill!
i install these everyday practically, glad to see how they work!
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Then there's the story of "Radioactive Boy Scout" David Hahn who built his own backyard nuclear reactor at the age of 17 from used smoke detectors.
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