Louis Daguerre a devenit cunoscut după ce a participat alături de Charles Marie Bouton la nişte spectacole de „Dioramă”, spectacole care constau în prezentarea unor tablouri de mari dimensiuni (22 x 14 m în cazul lor), alcătuit din diferite planuri și care, sub aspectul unui joc de lumini, dă spectatorului impresia realităţii.
În anul 1826 îl cunoaște pe Joseph Nicéphore Niépce, care se ocupa cu captarea imaginilor din exterior pe un suport solid, lucru care-i reușise. Împreună perfecționează sistemul, punând la punct procedeul care se va numi daghereotipie. Folosește ca agent sensibilizator iodul pus pe o placă de cupru, acoperit cu un strat de argint. Printr-o developare în vapori de mercur se obține o imagine negativă în relief (o matriță).
Invenția este prezentată Academiei Franceze de Științe la 19 august 1839 și a obținut brevetul. Fotografia se răspândește rapid nu numai în Franța, ci în toată lumea.
Sursă: wikipedia
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