Willis, P.J.2014-10-212014-10-2119871467-8659https://doi.org/10.1111/j.1467-8659.1987.tb00343.xFor applications such as daylight visual pilot training simulators, the correct representation of aerial haze, mist and fog is of major importance in providing accurate depth cues and training in poor visibility conditions.We present a straightforward derivation of a formula to express this and then show various pictorial examples to illustrate its effectiveness.10.1111/j.1467-8659.1987.tb00343.x35-41