Investigations have been carried out on the distribution of AgBr-grains in unexposed photographic plates (type Q2, 11 f o r d Ltd.) used for ion detection in mass-spectrometers. Electron micrographs show that a large fraction of the grains protrude about halfway out of the gelatine matrix and that these grains are covered by a very thin gelatine layer on the side facing the ions. The mean proje...

The term provenance is traditionally applied to works of art, referring to documentation which relates to the ownership and public visibility of a particular work, but also includes documentation of production, restoration, thefts, expert opinions on condition and valuations, and any other records which help to assess its integrity. In the realm of criminal evidence, the term chain-of-evidence ...

A photographic dataset is collected for testing image processing algorithms.