From: David Eastman (clearemulsions@yahoo.com)
Date: 10/08/02-06:17:20 PM Z
Jeff, Christopher, Everyone,
Where can I get more information on the dag
"interfererence image" and refractive index...?
What happens when one uses an (unsuccessful) varnish?
Perhaps my idea is way off, (no experience here) but I
am curious about what would be the result of the 3
different treatments... how would they differ?
1.Gelatin
2.Collodion
3.Don't know what its called, there are probably
several types, but what about the thin (low tac?)
films that are used to cover watch dials or other
"windows" or high quality lamination? Some are good
enough to go unnoticed until dirt builds up around the
edges. I had one covering the dial of something for
almost two years before I noticed it!
Curiosity Guessing!
Ray
--- Jeff Sumner <jdos2@mindspring.com> wrote:
> I know all sorts of varnishes have been tried,
> mostly unsuccessfully,
> but the oldest recognized American Daguerreotype was
> varnished- the
> image is still visible.
>
> From what I understand, because of the way
> Daguerreotypes work, with
> little bumps of silver forming an interference
> image, anything that one
> does to change the refractive index is going to
> affect images.
>
> JD
>
>
> >
> JD
> 2001 Moto Guzzi V-11 Sport
> 1999 Triumph Trophy (Shop Bike) 1200
>
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