A Conversation for The Early History and Development of Film
ITIWBS Started conversation Jul 20, 2015
And then talkies were made practical by means of keeping a motion picture film record (the sound track) of the optical display produced by Alexander Graham Bell's photophone, which transmitted sound over a beam of light.
A case of the steam engine effect in action again, combination of two pre-existing technologies producing something new.
Bluebottle Posted Jul 20, 2015
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