Why Is It Painful To Bite Aluminum Foil?

When (dental) metal in your mouth comes in contact with aluminum foil, your teeth get a painful shock from the electricity produced. Ben Bowlin explains how the voltaic effect plays out in your mouth in this episode of BrainStuff.

Whether the topic is popcorn or particle physics, you can count on the HowStuffWorks team to explore - and explain - the everyday science in the world around us on BrainStuff.

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