The structure of the photographic image
β Scribed by C.E.Kenneth Mees
- Publisher
- Elsevier Science
- Year
- 1921
- Tongue
- English
- Weight
- 682 KB
- Volume
- 191
- Category
- Article
- ISSN
- 0016-0032
No coin nor oath required. For personal study only.
β¦ Synopsis
THE UNEXPOSED EMULSION .
WHEN a photographic emulsion is examined under a microscope, the sensitive silver halide which is distributed in the gelatine is seen to consist of crystals of several forms and of many different sizes (Fig. I) . These crystals are chiefly in the form of triangles or hexagons, some of the hexagons being irregular, while occasionally a thin rod-shaped crystal is to be seen . After careful study,' it has been determined that all these crystals belong to the regular or cubic system, but that instead of belonging to the group of crystals of which sodium chloride is typical, silver bromide
π SIMILAR VOLUMES
By means of very sensitive measurements of the absorption of light by photographic emulsions the latent image was studied down to the range of normal exposures. It is shown, that the latent image and the print-out effect are due to the same process and differ merely quantitatively. The assumption