On Wed, 05 Nov 2008 10:01:37 -0500, Randall Nortman wrote: > ould one get reasonably useful results from a hacked camcorder or > digital camera with appropriate filters?
Short answer: No. Long version: The light detector in consumer camcorders and cameras is based on silicon. Sensitivity of silicon is fairly low for UV light, rises towards the red end of the spectrum. It peaks at 950 nm and drops like a rock when going further to the infrared. However, the wavelength of heat radiation of houses is an order of magnitude larger (about 10 µm). The photo diode is essentially insensitive to this kind of radiation. ---<(kaimartin)>--- -- Kai-Martin Knaak tel: +49-511-762-2895 Universität Hannover, Inst. für Quantenoptik fax: +49-511-762-2211 Welfengarten 1, 30167 Hannover http://www.iqo.uni-hannover.de GPG key: http://pgp.mit.edu:11371/pks/lookup?search=Knaak+kmk&op=get _______________________________________________ geda-user mailing list [email protected] http://www.seul.org/cgi-bin/mailman/listinfo/geda-user
