How Glowing Watch Hands Work

Kategorie: Wissen und Wissenschaft
Kanal: BrainStuff
Datum: 14. Juli 2008, 21:57
Stufe: B1-B2 (Mittelstufe)


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In many watches, phosphor is mixed with a radioactive element that continously charges the phosphor, powering glowing watch hands. Learn more about glowing watch hands in this HowStuffWorks podcast.