Are there spaces in between air molecules? If yes what is in those
Not only is there empty space in between molecules, there is empty
space INSIDE molecules and atoms!
This question is actually a very old one - the greeks debated
"atomism", with the objection to "atoms" being that if you have
atoms, then you must have empty space between atoms, and this did not
seem to make sense. Well, it turns out to be true - space has a structure
all by itself, and atoms and molecules just move around in it.
Of course, there are electromagnetic fields and other similar things
that penetrate space everywhere, so even empty space is not really
quite empty. So maybe both sides were right.
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Update: June 2012