PORTLAND, Oregon, Sept. 30 -- Portland State University posted the following news release:

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Why do pickles glow? PSU researcher investigates explosive answer

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If you mount a pickle on two metal forks and plug it into a socket, one end will light up in a brilliant orange glow. It's a classic K-12 science demonstration, but the exact physics behind the illumination has long remained a mystery.

Josh Mendez, an assistant pro . . .

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