Jennifer Harrison
Using carbon filament four decades before Edison’s birth Sir Humphry Davy invented the arc light . . . the technician W.K. Laurie Dickson developed film stock the movie camera and the film projector in homage to film’s pioneers Edward Muybridge and the Lumière brothers . . . the phonograph perhaps and the DC electric system were Edison’s but Nikola Tesla’s alternating (AC) current was more economical better . . . infuriated Edison used AC to publically electrocute animals stray dogs and an elephant . . . no harm done that elephant killed three men Edison (was said to have said) his mouth shut in the shape of lightning