Photograms or Rayographs are a camera used with photographic materials and not a camera. one of the first people to discover photograms/rayographs were William Henry Fox Talbot. he started off as laing leaves on a sensitised paper and left them outside on a sunny day to expose them.
Firstli picked objects that i could form into my chosen letter then i put it on light sensitive photographic paper; it is then exposed to light for approximately 5-8 seconds. The paper is then taken to the sink area in the darkroom and put in the chemicals.
The chemicals used in the darkroom are developer, this makes the solver iode of the paper emulsion to darken and fixer, which removes the undeveloped silver iodide. The next is stop which completely stops the process.