In 1888 – Emile Berliner demonstrated his flat disc audio recording and reproduction in a lecture he gave to the Franklin Institute in Philadelphia, which was printed in the institute’s Journal (vol. 125, no. 60).
In 1939 – The National Broadcasting Company televised the first sporting event, the second game of a doubleheader baseball game between Columbia and Princeton. About 400 TV sets were capable of receiving the broadcast. Princeton won 2-1 in the 10th.
In 1946 – At the meeting of the Institute of Radio Engineers (IRE, now IEEE) in San Francisco, Jack Mullin demonstrated the world’s first professional-quality tape recorded in the US.
In 1960 – While working at the Hughes Research Laboratories of the Hughes Aircraft company in Malibu, California, physicist Theodore Maiman used an artificial ruby to create the first laser.
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