every one who has ever owned an aluminum boat, or generally worked with aluminum that's anywhere near electricity. https://en.wikipedia.org/wiki/Galvanic_anode

every one who has ever owned an aluminum boat, or generally worked with aluminum that's anywhere near electricity. https://en.wikipedia.org/wiki/Galvanic_anode https://en.wikipedia.org/wiki/Galvanic_anode It's not an obscure thing; field specific maybe, but it's very much sub-table-stakes.