Timeline for What keeps solids solid
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
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| Sep 11, 2017 at 3:00 | history | edited | NickD | CC BY-SA 3.0 |
deleted 4 characters in body
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| May 8, 2017 at 21:35 | history | edited | NickD | CC BY-SA 3.0 |
added 711 characters in body
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| May 8, 2017 at 21:06 | history | edited | NickD | CC BY-SA 3.0 |
Add section on Pauli exclusion and stability of matter.
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| Apr 27, 2017 at 4:31 | comment | added | NickD | "amorphous solids, as well as glasses" may be wrong: glasses and amorphous solids might be the same thing. See e.g. this SciAm article | |
| Apr 26, 2017 at 20:44 | history | edited | NickD | CC BY-SA 3.0 |
Clarify that quantum mechanics is necessary.
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| Apr 26, 2017 at 20:18 | comment | added | NickD | All chemical bonds (including metallic bonds) are basically electrostatic in nature: shared electrons holding nuclei together e.g. You are right about penetration I think: that's more Pauli exclusion than anything else, but I (deliberately) did not cover that in the answer: I need to do some research first. And of course classical physics is inadequate for explaining solids, let alone atoms and molecules. But Coulomb's law is still around in quantum mechanics and it very much affects everything that solids do. | |
| Apr 26, 2017 at 19:35 | comment | added | Grimaldi | Electrostatics deals with slow moving or stationary forces. Coulomb's law or electrostatic force deals with forces between point charges. I can't see how this has anything to do with with properties of solids or why they don't penetrate each other. Classical physics breaks down even for simple chemical bonds, let alone for a description of solids. They might play a role for ionic crystals like salt, but they don't have anything to do with covalently bond carbon based substances (hands and tables) or metals. | |
| Apr 26, 2017 at 15:45 | history | answered | NickD | CC BY-SA 3.0 |