APIs often come in the form of a library that includes specifications for routines, data structures, object classes, and variables. In other cases, notably SOAP and REST services, an API is simply a specification of remote calls exposed to the API consumers.
The inventor of the photographic process in which a photograph produced without a negative by exposing objects to light on light sensitive paper, is named Man Ray.
For the last 150 years the term photo paper has been used to the describe light-sensitive papers used to create photographic. prints. Nineteenth-century photo papers were usually handmade. Plain papers or papers coated with a clear binder layer. were sensitized with special salts and silver nitrate.