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 <[email protected]> wrote: > 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, [email protected] wrote: > > > > > 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 pieces of colored glass and re-exposed to bright sunlight, the plate > > > would reproduce the colors through which the light was filtered. > > [snip] > Cloud storage:- > > Unsafe, Slow, Expensive > > ...pick any three.
