[pure-silver] Re: Here's one for the head scratchers

  • From: "Ole Tjugen" <oftjugen@xxxxxxxxx>
  • To: pure-silver@xxxxxxxxxxxxx
  • Date: Sun, 16 Jan 2005 23:32:48 +0100

Something related to triboluminescense, I guess? I don't know if the light  
formed is enough to be visible as it is with many other substanced, but it  
doesn't take much energy to make developable defects in a silver halide  
crystal. Which we know very well, at they're light sensitive...

Ole Tjugen

>   BTW, pressure effects on photographic emulsions has
> evidently been widely studied. There is a mention of the
> effect in _Theory of the Photographic Process_ 3rd edition,
> Mees and James, with a number of citations to research
> papers. The explanation given there is that the image is
> produced by heat effects (see p.17), however I have a vague
> recollection of an article attributing it to electron
> release due to deformation of the crystal shell but have no
> idea now where I saw this.

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