I understand the N2 O2 are very small molecules. But aren’t they all packed down on the earths surface? There’s no vacuum here so all of space on surface level should be filled with N2 C2O and O2
In: Physics
The molecules in air are quite spaced out, as it is a gas. Sure, gravity compacts them a bit, but they’re all bouncing around as fast as a bullet and that’s easily enough to keep them from packing fully together.
Even without that, liquid O2 and N2 are both more or less transparent, so…
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