# Question #6b066

Apr 6, 2014

There's no official definition, but infrared light is generally considered to range from about 700 nm to 1 mm in wavelength, or from about $4.3 x {10}^{15} {s}^{- 1}$ to $3.0 x {10}^{11} {s}^{- 1}$ in frequency.

Infrared light covers the electromagnetic spectrum between visible light and microwave radiation.