clam chowder prints

Dan Shapiro (dan@good.stanford.edu)
Thu, 6 Jul 95 13:29:02 -0700

Judy Seigel asked me to elaborate. I literally took some clam
chowder home from a restaurant, ground it up in a blender, added
an equal amount of ammonium dichromate, painted it on a page
and exposed it under a large negative to sunlight. I think I used
a powdered rock as a pigment.

I got back a rather low resolution, high contrast image (I was working
with a high contrast negative in any case), which showed the basic
action of a colloid hardening under dichromate + light to capture
pigment. There was alot of staining, and burn in of the dichromate
olive color, so this was a very primitive experiment.

With alot of work, however, this could become an industry.

Dan