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Feb19-12, 08:18 PM
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Quote Quote by gomunkul51 View Post
A common answer: electrons repel electrons (EM force)...
A more interesting answer: the electron Degeneracy Pressure.
Well, I'm not expert on QM, but I think that these are two distinct effects, and that the first one (Coulomb repulsion) is what is responsible for the "illusion of solidity" in everyday objects. Otherwise, how would you explain the solidity of non-degenerate matter?

Please correct me if I am wrong.