Re: gum bichromate

Dan Shapiro (dan@good.stanford.edu)
Fri, 9 Jun 95 17:23:04 -0700

Re:

"The exposure times are in seconds and you have to hover over the
print, ready to snatch it at whats hopefully the right moment."

I've found exposure times radically longer than seconds, e.g.,
minutes (5-10) in sunlight at mid-afternoon. This is with a saturated
dichromate solution. Are there hidden variables here, or am I just
living further from the sun?

Dan