Word: phonofilm
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...talking movie is an invention of Dr. Lee de Forest, the inventor of the audion detector and other radio devices. He has dubbed it, to distinguish his invention from others of the same kind, the "Phonofilm...
Radio broadcasting from the Brazilian Centennial Exposition at Rio de Janeiro was heard at Honolulu, 8,000 miles away, establishing a new distance record. The phonofilm," an apparatus which produces sound and pictures simultaneously, invented by Dr. Lee de Forest, was successfully demonstrated before the New York Electrical Society...