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.
The very first photographs made were on printing out paper. Light energy alone, usually from the sun, reacted with the light sensitive chemicals on the paperâs surface to produce an image. They only needed to be fixed to preserve the exposed image.