Where was the first animated picture demonstrated before an audience?
The first animated photograph projection before a theater audience was shown on February 5, 1870 at the Academy of Music in Philadelphia. Henry Renno Heyl used his phasmatrope, a converted projecting lantern in front of which was a revolving disc containing sixteen openings near the edge on which photographic plates were placed. Source: Famous First Facts: A Record of First Happenings, Discoveries, and Inventions in American History, 1997, p.391, Joseph Nathan Kane, 031.
