WHAT ALL HAPPENED ON 23. FEBRUARY 1927
Look what happened on 23. February 1927

President Calvin Coolidge signs a bill by Congress establishing the Federal Radio Commission (later replaced by the Federal Communications Commission) which was to regulate the use of radio frequencies in the United States. (23. February 1927)

German theoretical physicist Werner Heisenberg writes a letter to fellow physicist Wolfgang Pauli, in which he describes his uncertainty principle for the first time. (23. February 1927)

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