[alt-photo] Re: halo chrome

[Christina Anderson]

Anne, 

Thanks for the praise, but there are far more worthy people on this list than I, lurking...

I forgot one mention (I think) and that is that Pierre Cordier talks about "photolysis" and I don't know how this relates, differs from Mie effect and if both are operative or only one, but another avenue to follow. Chemists on the list can probably answer this question of whether photolysis has anything to do with halochrome, but since photolysis is in the presence of light and silvering doesn't have to happen in the presence of light (put a blank piece of paper in the dark into the chromo bath 1 and it'll silver out with no light exposure) it may not be the right tree to bark up. But always good to exhaust all possibilities.
Chris

Christina Z. Anderson
christinaZanderson.com

On Oct 3, 2011, at 8:58 AM, Anne Chansonette wrote:

> Thanks to everyone who took the time to respond to my post. At the risk of
> sounding like a schoolgirl gushing about a rock star, I was so thrilled,
> Christina, that you took the time to answer. Your books have been my bibles.
> I had been following the earlier blog threads on this and so had looked at
> the work done by Jolly, Man Kit Lam and Novo. I just felt I still wasn't
> quite understanding what was happening in terms of electron shelves and
> particle grabbing to balance those, etc. I asked a chemist friend, but he
> wasn't able to give me an answer either. I did chromoskadesic and halochrome
> with the high school kids I teach and I too found that Arista edu paper
> silvered out incredibly. Results on matte paper have been interesting and
> work well for certain subjects. Thanks again!!
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