Re: Why does cyanotype work?

http://photography.about.com/library/weekly/aa061801d.htm has a broad
outline and also refers those interested to the Mike Ware book.

Regards

Peter Marshall
petermarshall@cix.co.uk +44 (0)1784 456474
31 Budebury Rd, STAINES, Middx, TW18 2AZ, UK
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and elsewhere......

Loris Medici wrote:
> Barry,
>
> Also
> http://www.alternativephotography.com/books/mw_cyanotype.html
> may help you much I presume. Anyone having this book? I was told that it
> has very detailed information on the chemistry of the process...
>
> Regards,
> Loris.
>
> -----Original Message-----
> From: Breukel, C. (HKG) [mailto:C.Breukel@lumc.nl]
> Sent: 04 Nisan 2006 Sal 16:17
> To: alt-photo-process-l@usask.ca
> Subject: RE: Why does cyanotype work?
>
>
> Barry,
>
> This should surely help:
>
> http://www.mikeware.demon.co.uk/index.html#anchor930646
>
> under
>
> Technical Issues
>
> Chemistry of the Iron-based Processes
>
> Best,
>
> Cor
>
>
>> -----Original Message-----
>> From: Barry Kleider [mailto:bkleider@sihope.com]
>> Sent: dinsdag 4 april 2006 15:08
>> To: alt-photo-process-l@usask.ca
>> Subject: Why does cyanotype work?
>>
>> I've been teaching a high school chemistry class using the cyanotype
>> process as our point for understanding chemical reactions.
>>
>> We've looked at the iron II and iron III states...
>>
>> We've talked about how potassium is the marker element for iron...
>>
>> I'm looking for a way to explain the photo-reactive properties of the
>> process. I assume that the image formation is the result of a chemical
>>
>
>
>> reaction. (Am I right?) What does light do in this process? How?
>>
>> Is this a simple oxidation process? If we left a piece of treated
>>
> paper
>
>> in the dark would it eventually turn blue also? Why does it leave an
>> image?
>>
>>
>> Thanks,
>> Barry
>>
>
>
>
Received on Tue Apr 4 11:39:55 2006