From: utzoo!miles Newsgroups: net.space Title: Re: quantum and FTL Article-I.D.: utzoo.2346 Posted: Fri Aug 6 07:31:30 1982 Received: Fri Aug 6 07:31:30 1982 Quantum tunneling is NOT instantaneous in any sense of the word. "A particle which appears on one side of a potential barrier at a particular instant in time...", the instant in this is a completely different instant as in 'instantaneous'. The word instant in this statement should be replaced by 'point in time'. And as for the instantaneous travel, which would be suggested by no "transmission"... , it does take the particle finite time to cross the barrier, the measur e of time is to small to measure by conventional, standard timing devices, so out of convenience one says it is "instantaneous", although it is not. It could be measured, but one would need a very,very acurate timing device. And yes, there is transmission. The particle is not prese nt at one barrier, and then just appears at the other barrier. Raymond S.