> Hello Cor
>
> On 28-02-97 Cor Breukel wrote:
>
> >>>I have no idea if one could test the specific wavelengths of different
> processes (I imagine I could make tiny pieces of say cyanotype paper,
> "read' a wavelength, thus exposing this tiny bit of cyanotype paper with
> this particulair wavelength) <<<
>
> I wonder if it is nescessary to insert a coated paper in the cuvette. If the
> paper contributes to the UV-absorbance of the lightsensitive solution
> used, then yes, otherwise I would believe that what you could do is to
> put the cyanotype solution in the cuvette, and make a scan. That should
> give you one or more absorbance peaks in the UV-region of the scan,
> and they should correspond to the spectral sensitivity of cyanotype.
..good point!, much better than my first thought (..I should have thought
of it myself..;-)..but I am no spectrofotometerist but a
biochemical-moleculair technician..)..
on second thought..I'am not sure if you can directly relate the absorbance
peaks of say the Cyanotype solutions to the sensitivity peaks of the
ferro/ferri reaction. I'll try to find some more info on it here at the
institute..
>
> This could of course be done for any other alternative process as well. I
> would actually believe that it has been done (Luis, Klaus ??????).
>
> If you decide to pursue this subject, I would be interested in the results.
>
> Regards
>
> Birger
> Oslo, Norway
>
> bau@nycomed.com
> ==========================================================
> To day we have 4 hours 29 minutes more daylight than at winter
> solstice.
> ==========================================================
>
Cor Breukel
http://ruly70.medfac.leidenuniv.nl/~cor/cor.html
"The Infrared Gallery"
http://ruly70.medfac.leidenuniv.nl/~cor/ir-gallery.html