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What are seven colors
The rainbow is made up of seven colours: red, orange, yellow, green, blue, indigo, and violet. The acronym “ROY G. BIV” serves as a handy reminder of the rainbow’s colour sequence. Godfrey Kneller’s portrait of Sir Isaac Newton.
Which color blends most in seven colors
The glass slows down each beam of light differently depending on its wavelength (or colour). Violet light is slowed more than longer wavelengths of red light due to its shorter wavelength. As a result, violet light bends the most, whereas red light bends the least.