@richard The only credit I've been able to find is the name at the bottom of the graphic. I included the full version (not the widely shared crop) for that reason.
@coreyspowell I'm a physicist and I didn't understand anything about this explanation. Why is the magnetic field asymmetric? Why does the color depend on the concentration, if it's due to electrons falling back to their ground state (it is, isn't it)? Why would charged particles excite atomic oxygen differently if the concentration is higher?
Idk, nice fonts and everything, but this infographic didn't do much for me.
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