Visible spectrum

The visible spectrum (or sometimes called the optical spectrum) is the part of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light or simply light.

A typical human eye will react to wavelengths in air from about 380 to 750 nm.^[1]

The familiar colors of the rainbow in the spectrum include all those colors that can be produced by visible light of a single wavelength only, the pure spectral or monochromatic colors.

But there are no clear boundaries between one color and the next.^[2]

1. ↑ 053446226XCecie Starr (2005). Biology: Concepts and Applications. Thomson Brooks/Cole. ISBN 9780534462239.
2. ↑ Thomas J. Bruno, Paris D. N. Svoronos. CRC Handbook of Fundamental Spectroscopic Correlation Charts. CRC Press, 2005.