Where is visible light located on the electromagnetic spectrum?

1 Answer
May 28, 2018

Around #"400 - 700 nm"# wavelength, or a frequency of #7.50 xx 10^(14) - 4.28 xx 10^(14) "s"^(-1)#, or a wavenumber of #25000 - "14286 cm"^(-1)#:

http://media.factmyth.com/2016/07/

Here, #color(red)("red")# has the longest wavelength and #color(purple)("violet")# has the shortest wavelength.

Do you know the 7-letter mnemonic for the prominent colors in the visible spectrum?