[pure-silver] Re: Silver Halide [was Fogged New Oriental.....]
- From: "Koch, Gerald" <gkoch02@xxxxxxxxxx>
- To: "'pure-silver@xxxxxxxxxxxxx'" <pure-silver@xxxxxxxxxxxxx>
- Date: Mon, 17 Jan 2005 09:52:10 -0500
Certain other metals form light sensitive compounds. All are far less sensitive
than the silver. However, iron compounds are sensitive enough to be used in
various alternate printing processes such as platinum printing, cyanotypes,
kallotypes, etc.
Jerry
-----Original Message-----
From: pure-silver-bounce@xxxxxxxxxxxxx [mailto:pure-silver-bounce@xxxxxxxxxxxxx]
On Behalf Of Peter Badcock
Sent: Monday, January 17, 2005 7:32 AM
To: pure-silver@xxxxxxxxxxxxx
Subject: [pure-silver] Silver Halide [was Fogged New Oriental.....]
> Silver halide crystals are indirect gap semiconductors.
> Did you know that?
I didn't actually. This fact has sparked my interest to
read more about the physics behind photographic emulsions.
After I googled (yep a new English word if you didn't know! Past tense of what
used to be a noun, but is now a verb -
google) these terms, I came across the following interesting read about why
silver halide is so unique in it's properties for photography.
http://www.madsci.org/posts/archives/nov2000/975608492.Ch.r.html
regards
Peter Badcock
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