Buttleston t1_j2ce39v wrote on December 31, 2022 at 5:05 AM

Yes, the order is always the same. The refraction that happens in a rainbow isn't actually "splitting the light into colors," it's actually just taking white light (which is a combination of all the visible wavelengths of light) and spreading them out like an accordian. So, the colors you see will be ordered by the wavelengths of light.

Low frequency light wavelengths that we can see start at red and as the frequency increases you get up into orange, yellow, green, blue, etc.

Rangermatthias t1_j2ckhyc wrote on December 31, 2022 at 6:08 AM

To remember the colors, think of it as a person's name, ROY G. BIV: Red, Orange, Yellow, Green, Blue, Indigo, Violet.