caa a22 4500 386338507 CHVBK 20180307111741.0 cr unu---uuuuu 161130e198905 xx s 000 0 eng 10.1557/S0883769400062904 doi S0883769400062904 pii (NATIONALLICENCE)cambridge-10.1557/S0883769400062904 Slifkin Lawrence The Improbability of the Photographic Process [Elektronische Daten] [Lawrence Slifkin] The very high sensitivity of silver halide photographic emulsions is the result of a surprisingly high quantum efficiency in the formation of the latent image, combined with a large amplification of the stored optical signal upon photographic "development.” The efficient formation of the latent image can be traced to the effects of an unusual set of physical properties of silver bromide and silver chloride, involving the electron energy band structure, the dynamics of photoelectrons, the nature and mobilities of the ionic point defects, and the existence of a sub-surface electric field. Despite the current availability of a wide variety of optical recording systems, the standard silver halide photographic emulsion continues to offer a unique combination of sensitivity, resolution, tone quality, convenience, and economy. This article will outline the physical processes that operate in forming the image. It will emphasize the unusual set of properties of silver bromide and silver chloride that are involved, and that impart to the process its extraordinary efficiency. Only black-and-white images will be considered, but the same basic imaging process is involved in color photography as well. This discussion is, of necessity, brief and often qualitative, but more complete treatments of the scientific aspects of the photographic process can be found in the other articles in this issue of the MRS BULLETIN, as well as in the bibliography. Copyright © Materials Research Society 1989 MRS Bulletin Cambridge University Press 14/5(1989-05), 36-40 0883-7694 14:5<36 1989 14 MRS https://doi.org/10.1557/S0883769400062904 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1557/S0883769400062904 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Slifkin Lawrence NATIONALLICENCE 773 0- MRS Bulletin Cambridge University Press 14/5(1989-05), 36-40 0883-7694 14:5<36 1989 14 MRS CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge