Originally posted by RevRSleekerThanks, I will look at that. I am also thinking about taking photos of the transmitted light with the window "in the way" or not, but don't know if cameras pick up any UV light if it is there. Is there a modern camera geek out there?
Noting your point about not wishing to utilise equipments etc, I still thought this worthy of attention..I've used something similar to the products listed within the link below whilst testing for total darkness and also varying UV levels.. for plants on a grow \ flower cycle. It's a very cheap way of verifying immediate conditions. I hope it helps or fa ...[text shortened]... something to peruse momentarily http://www.stevespanglerscience.com/experiment/00000118
Originally posted by KazetNagorraThanks everyone. I will look into the beads.
Sit behind the window in the sun for a while. If you get a tan, the window does not absorb UV.
Note that standard glass absorbs UV, so for this to not absorb UV it would have to be something other than standard glass.