So that if, for example, i put two cubes of copper next to each other they don’t become one
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People are explaining cold welding a bit, and I think it’s worth noting that spacecraft design actually has to take this into account, there are many space mission failures which have been attributed to cold welding.
However, it also isnt a *huge* consideration. Even in the vacuum of space, the metals still almost always have enough of an oxide layer to prevent this. Depending on the mission and the design of the craft it’d be an afterthought. Iirc for the ISS they basically never take this into account, because even the *slightly* different circumstances of orbiting closer to earth instead of farther out in space is enough to prevent it.
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