On May 29, 2008, at 5:11 PM, Peter Korsten wrote: > James R. Coplin schreef: > >> Great, another random noise source. That's really fantastic. What >> I like >> about this one is I need a laptop and a camera instead of a couple >> of ICs... > > My son can do it too, by sticking a piece of paper into a fan. I think it's cool.