The question is, if I am willing to sacrifice a little bit on exposure time
and place the paper further away (I think the way it is set up, the paper
will be about 4-5 inches from the tube), will that give even exposure? I
assume it should be because it was designed as an exposure unit.
Is exposure time going to be extremely long? Does inverse square law
approximately apply here? I remember there was a long discussion last year,
but I just need an approximate. Do you think with 4-5 inches distance (and
four 20W bulbs), will it take under or over 30 minutes to expose a gum print?
Also, the black-light tubes is 20W each. If I need UV tubes, I can simply
replace them by 20W UV tubes, correct?
Thanks a lot in advance for your help!