> >>There is a
> >big gap between having the recipe and directions written down and actually
> >being able to perform these successfully. Dr Perera has certainly shown it
> >can be done.
>
> That is somewhat true. However, If one knows the basic developing material
> used to develop the image, you can easily determine the basic type of
> sensitizers used. If you know the dyes or pigments, you can easily
> determine other things about the process. Trial and error and a little
> experience will allow someone who understands a bit about chemistry -
> especially photochemistry, to work backwards and get a good idea of the
> production techniques.
>
> Seemingly complex chemical processes are reverse engineered in this way.
> All you need is some basic ideas and your set to go.
>
> RM
>
Bob,
What was the last process that you reverse engineered?
Sincerely, Art
Art Chakalis
Columbus, Ohio, USA