In 1949 – TV station KC2XAK of Bridgeport, Connecticut became the first ultra high frequency (UHF) television station to operate a daily schedule.
In 1952 – The first hearing aid using a junction transistor went on sale, the model 1010 manufactured by the Sonotone Corporation in Elmsford, New York, U.S.
In 1959 – Physicist Richard Feynman gave a talk called “There’s Plenty of Room at the Bottom”, in which he suggested it should be possible to make nanoscale machines that can arrange atoms the way we want.
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