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nodle

Mercury attacks aluminum

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A small amount of mercury amalgamates itself into an aluminum I-beam and destroys it from within. Gallium scratched into the surface allows the mercury to penetrate the protective oxide layer that normally surrounds anything made of aluminum.

This is a time-lapse video, the action takes about two hours in real time. The powdery oxide is falling off, what you dont see is a significant pile of it building up underneath.

http://www.youtube.com/watch?v=Z7Ilxsu-JlY

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