Ah, this cold is not free... In "The spectrum of the light reflected by light changes..." remove the second "light". Appologies. Veronica Garea LLLL (and PhD, Eng Physics) GALM Bariloche IBFAN Bariloche - LLL Argentina *********************************************** To temporarily stop your subscription: set lactnet nomail To start it again: set lactnet mail (or digest) To unsubscribe: unsubscribe lactnet All commands go to [log in to unmask] The LACTNET mailing list is powered by L-Soft's renowned LISTSERV(R) list management software together with L-Soft's LSMTP(R) mailer for lightning fast mail delivery. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html