This Day in Geek History: October 27
1904
The first underground New York City Subway line opens. The first line runs between the Brooklyn Bridge and Broadway, from City Hall to West 145th Street.
1920
KDKA in Pittsburgh, Pennsylvania is granted the first public radio broadcast license.
1922
The Audion, one of the first systems for synchronizing film with an audio recording, is demonstrated by Western Electric’s Bell Laboratories to the American Institute of Electrical Engineers at Yale University’s Woolsey Hall. The system requires a projectionist to hand-crank the film in time with the audio disk.
1927
The first newsreel to feature sound debuts.
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