Re: Gum prints by enlargement

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From: Richard Maddox (slow_emulsions@yahoo.co.uk)
Date: 05/05/00-08:01:29 AM Z


I think Edward Meyers' was trying to say that not all
electromagnetic radiation is light... to be light it
has to be able to effect vision in normal subjects.

If that is not what he was trying to get across, it is
certainly what I am saying.

R.M.

--- "Jeffrey D. Mathias"
<jeffrey.d.mathias@worldnet.att.net> wrote:
> Edward Meyers wrote:
> > ...
> > And...UV is radiation, not light. Light is the
> visible part of the
> > spectrum. So shouldn't UV light be an incorrect
> description?
>
> All light is radiation - electromagnetic radiation -
> as well as gamma
> rays and radio waves. The following web pages can
> shed some light on
> your question (there are many others but these sites
> looked
> informative.)
>
> http://www.scimedia.com/chem-ed/light/em-spec.htm
>
> http://www.fishponds.freeserve.co.uk/emspectrum/
>
> or for a tutorial:
>
http://www.uea.ac.uk/menu/acad_depts/che/tutorial/physchem/light/l1.htm
>
> --
> Jeffrey D. Mathias
> http://home.att.net/~jeffrey.d.mathias/

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