M. Argo was a noted French astronomer. He was an associate and savant of Louis Jacques Mande Daguerre, who dealt with the scientific problems of optics and chemistry involved in the search for photographic discovery. He experimented with the length of time, after the knowledge that nitrate of silver blackened in the light, before any successful experiments were made to fix the image of the camera by its use.
On the 19th of August, before the French Academy of Sciences, Argo presented Daguerre's secret of his Daguerreotype process. In his speech, He paid tribute to the memory of M. Joseph Nicephore Niepce, describing Niepce's process by which, after three days exposure, he succeeded in forming an image which could be retained on the plate. Argo will always be remembered for announcing to the world the discovery of photography.
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