The term “heliography” was first coined by its inventor, Joseph Nicéphore Niépce, to identify the process by which he obtained the first permanent photographic images. With its classical derivation from the Greek “helios” meaning sun, and “graphein” denoting writing or drawing. The term encompassed both the source and the process in describing this first successfully permanent means of letting light record itself. In other words: drawing with light.
Niépce was the first individual to secure permanent images by photochemical means.
Louis Daguerre and Joseph Nicéphore Niépce coated a copper plate with silver, then treated it with iodine|iodine vapor to make it sensitive to light. The image was developed by mercury vapor and fixed with a strong solution made of ordinary salt. Read more Drawing with light

















