I just resent an earlier posting by Barry regarding light sources...
Hope that's ok and of interest.
..Michael
-- Michael Hasemann | Technical Research Centre of Finland - Automation | Kaitovayla 1, P.O. Box 13023, 90571 Oulu, Finland | Fax: +358 81 5512320 Tel: +358 81 5512239 jmh@tko.vtt.fi <-email-------------www-> http://www.kau.vtt.fi/~jmh/