This, or something like, must be the explanation. The silver iodide-bromide
layer is far too thin for an interference effect. It might also be a
plasmon-polaritron effect which one might argue is the same thing.
--- Original Message ---
On Sunday, November 27th, 2022 at 9:08 PM, Robin
I don't remember reading anything about that. But in my personal experience,
the plate reverts to a murky gray, with slightly darkened outlines of the
colored areas. The original color of the over-exposed plate is sort of purplish
black.
MSf
--- Original Message ---
On Sunday, November
Hi,
Silver atoms may arrange themselves in clusters of a size matching the
wavelength of the light. Then the clusters are
selective for (resonate at) that wavelength.
>On Sun., Nov. 27, 2022, 2:58 p.m. MSF, wrote:
>
>>
>> This effect was studied extensively thoughout the 19th and early 20th
>>
Wow...
When you say the colours faded do you mean the plate reverted to being
completely black again (i.e. its over exposed state)?
Harry
On Sun., Nov. 27, 2022, 2:58 p.m. MSF, wrote:
>
> This effect was studied extensively thoughout the 19th and early 20th
> centuries, but in another field. Ea
This effect was studied extensively thoughout the 19th and early 20th
centuries, but in another field. Early researchers in photography noted the
same effect and more in their experiments with Daguerrotype plates. A purposely
over-exposed plate would turn very dark. If the plate was covered with
This is a google english translation of a german article that was published
in December in 2021.
The Ultraviolet Enlightenment
https://docs.google.com/document/d/178aIZp1ts5J1HCvWuZCkdoDvwbzp8tm_xiPGdonvPM8/edit?usp=sharing
(The original article is here
https://www.faz.net/aktuell/wissen/physik-m
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