What's that discolouration on the silver spoon?

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What's that discolouration on the silver spoon?

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Ask Lemmy@lemmy.world · 8 hours ago

I have my late grandpa’s silver spoon attached to my fridge with a neodymium magnet. What kind of chemical reaction causes that discolouration?

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…galvanic reaction in this case, accelerated oxidation from contact between differential metals…

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