In the absence of a prism, what is making the photons in a rainbow congregate into bands of separate colors?

Question

And why are the colors are always in ROYGBV order?

In: 5

Answer 1

It’s a rainbow because light radiation is a spectrum of high to low energy packets. We just interpret it as colors in the visible spectrum that we see. Uv and IR are colors too if our eyes adapted. It’s in that order because again hi to low energy which also correlates with wavelength or size.
When you hear gamma rays traveling thru space that’s a form of radiation, super high energy and if we had engineered eyes there’s a color to that too at the super dark violet end let’s say (making this up). The sun itself is not white or yellow for similar reasons. It has energy across the spectrum and it’s mixed up the colors.