Re: Tanning theory of dichromated colloids (was gelatin

"(...) how similar gelatin and gum are and why I should take the
hardening of gelatin with chrome alum as a model for the photoprocess of
dichromated gum. ;-) I don't think gum and gelatin are are much closer
than gum and leather, and they are sure way farther apart than gelatin
and leather."

So dichromated gum would be much closer to dichromated cellulose or
dichromated glucose/fructose?

Martin

----- Original Message -----
From: "Katharine Thayer" <kthayer@pacifier.com>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Friday, May 07, 2004 11:07 AM
Subject: Re: Tanning theory of dichromated colloids (was gelatin

> Katharine Thayer wrote:
> >
> > Ryuji Suzuki wrote:
> > >
> > >
> > > Take that idea for a moment and comment on how similar gelatin and
> > > leather are, and why discussion on one is useful for the other, and to
> > > what extent. (in 250 words)
> > >
> >
> > Not very much. At all. Not very useful. At all.
> >
>
>
> While we're at it, perhaps you'd like to comment, in as many words as
> you like, on how similar gelatin and gum are and why I should take the
> hardening of gelatin with chrome alum as a model for the photoprocess of
> dichromated gum. ;-) I don't think gum and gelatin are are much closer
> than gum and leather, and they are sure way farther apart than gelatin
> and leather.
> kt
Received on Sun May 9 12:53:42 2004