In a message dated 15/12/2005 12:24:36 GMT Standard Time,
gauvreau-yves@sympatico.ca writes:
If, as some of you said, you leave a fresly coated layer of gum emultion
over night in the dark or best condition and it's showing something that
shouldn't be there the next day.
This is very simple.
The dichromate reacts with the gum as soon as the two are put together
whether this is in the light or the dark.
All the light does is speed up the reaction.
It is a phenomenon known as the 'dark reaction' which has been known about
since the earliest days of photography.
Terry
Terry King FRPS
RPS Historical Group (Chairman)
_www.hands-on-pictures.com/_ (http://www.hands-on-pictures.com/)
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1. An excellent thing is as rare as it is difficult.(Spinoza)
2. A man's reach should be beyond his grasp or what's a heaven
for.(Browning)
3. Frustra fit per plura quod potest fieri per pauciora.(Occam's razor or
'Keep it simple!').
4. Nullius in Verba (Horace), 'Take no man's word for it' (motto of the
Royal Society).
5. If ignorance is bliss, why are not more people happy ? (anon)
Received on Thu Dec 15 07:17:24 2005
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