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
I think you’re looking at the question from the wrong angle. Imagine a scenario where we only saw in wavelengths of light which were opaque to O2, N2, etc. What would you be able to see? You’d be in a literal fog cloud your whole life. You’d be effectively blind, except that you spent energy developing useless eyes, so it’s worse than being blind. Being sensitive to the spectrum we are sensitive to lets us see things other than the air that might be more important.
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