JOHANN HEINRICH SCHULZE

JOHANN HEINRICH SCHULZE
(1687 - 1744)

German professor at the University of Altdorf. With experiments, proved that silver nitrate becomes dark due to sunlight and not by temperature. He is the first that created photograms with paper masks, which unfortunately could not last due to lack of paper fixer. His observations that opened the path, for the creation of photography became know after his death