Question

why is violet at the end of the spectrum
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Answer 1

Answer:

Violet is at one end of the spectrum of visible light, between blue light, which has a longer wavelength, and ultraviolet light, which has a shorter wavelength and is not visible to humans. Violet objects often appear dark, because human vision is relatively insensitive to those wavelengths.

Explanation:

Answer 2

Violet is at one end of the spectrum of visible light, between blue light, which has a longer wavelength, and ultraviolet light, which has a shorter wavelength and is not visible to humans. ... Violet objects often appear dark, because human vision is relatively insensitive to those wavelengths.