What phenomenon causes a static electricity shock when you touch a metal doorknob after walking across a carpet?
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The triboelectric effect occurs when certain materials become electrically charged after coming into contact and then separating. Walking on carpet transfers electrons to your body, building up a charge. When you touch metal, those electrons jump quickly to ground, creating that familiar little spark. Photo: Original image: Sean McGrath from Saint John, NB, Canada Derived image: Black Ra, Wikimedia Commons, CC BY 2.0.
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Source: Wikipedia (CC BY-SA)
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