The Visible Light Spectrum is a very small part of the Electromagnetic Spectrum that is visible to the human eye. The electromagnetic radiation in this wave is known as visible light or light. The colors that makeup the Light Spectrum include red, orange, yellow, green, blue, indigo, and violet. This range in wavelengths in the Visible Light Spectrum was discovered by Isaac Newton in the 17th century, although there is further knowledge that it had been discovered four centuries earlier in the 13th century by Roger Bacon. The wavelength of the Visible Light Spectrum is 400 - 700 nm, but a typical human eye will respond to wavelengths from about 390 to 700 nm. The frequency of the Visible Light Spectrum is in the vicinity of 430–770 THz. Visible light can be both beneficial and dangerous to humans. There are studies that the Visible Light Spectrum can induce indirect DNA damage. Visible light also benefits humans by allowing them to see color.