The Selenophone printed 70 minutes of sound on a 300-meter paper roll in 1930s Vienna
The Selenophone, co-invented in Vienna by physicist Hans Thirring, stored about 70 minutes of sound as four printed tracks on a 300-meter paper strip.
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The Selenophone, co-invented in Vienna by physicist Hans Thirring, stored about 70 minutes of sound as four printed tracks on a 300-meter paper strip.
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