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In space vacuum, two clean pieces of the same metal can f... | funfact.wiki | funfact.wiki
In space vacuum, two clean pieces of the same metal can fuse on contact without heat. On Earth, oxide films and grime block this bond; in vacuum, bare atoms meet directly and act as one solid. This is cold welding, so spacecraft parts need coatings or anodizing.
  • Metal
  • Vacuum
  • Space
  • Physics
  • Invention
  • Welding
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