Like the title says, how does a rainbow exist twice? If we could see every electromagnetic wavelength, would we see all of those “colors” in between the first and second ring? What phenomenon causes it to happen twice and always separated by what seems to be a fixed amount/distance from each other when they happen?
In: Physics
I don’t have anything to add beyond what other people have said… but if you’re interested, Walter Lewin, the famous MIT physics lecturer, gives a great video explaining how rainbows work. It assumes a high school-ish level of physics and math understanding.
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