From: utzoo!decvax!harpo!floyd!cmcl2!philabs!sdcsvax!sdccsu3!ee163hp Newsgroups: net.physics Title: Query about "averaging" photons ... Article-I.D.: sdccsu3.260 Posted: Thu Jan 27 07:54:15 1983 Received: Mon Jan 31 08:59:23 1983 Does anyone know the answer to this (and whether it's been determined experimentally): If an ultraviolet photon and an infrared photon strike the same receptor in your eye at virtually the same place and time, does your eye: 1) Not respond because we aren't built for infrared and uv? 2) Respond because the infrared and uv have an interference effect which results in what appears as a photon of some visible wavelength? Thanks in advance to anyone who does know, Larry West -- not a physicist! U.C.S.D. ( ..sdcsvax!sdccsu3!ee163hp )