this post was submitted on 21 Oct 2023
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Physics
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Any contamination (even CO2 from the air) will make it conductive enough to cause corrosion, eventually ruining the circuit board. Once this corrosion starts, it can add metal ions into the water, further increasing conductivity, leading to more corrosion. If you've ever tried to build an electrolysis cell you will know how good water and electricity are at dissolving metal. (Even thick wires can disappear in minutes)