The temperature on January 30, 1927 was between 1.5 °C and 6.4 °C and averaged 4.1 °C. There was 5.4 mm of rain. There was 1.5 hours of sunshine (17%). The average windspeed was 5 Bft (very strong wind) and was prevailing from the south-southwest. Source: KNMI
February 23 » German theoretical physicist Werner Heisenberg writes a letter to fellow physicist Wolfgang Pauli, in which he describes his uncertainty principle for the first time.
February 23 » U.S. 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.
April 12 » Rocksprings, Texas was hit by an F5 tornado that destroyed 235 of the 247 buildings in the town and killed 72 townspeople and injured 205; third deadliest tornado in Texas history.
July 4 » First flight of the Lockheed Vega.
September 22 » Jack Dempsey loses the "Long Count" boxing match to Gene Tunney.
December 8 » The Brookings Institution, one of the United States' oldest think tanks, is founded through the merger of three organizations that had been created by philanthropist Robert S. Brookings.
When copying data from this family tree, please include a reference to the origin: Elly Gelderman, "Family tree Gelderman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-gelderman/I5955.php : accessed February 28, 2026), "N.N. van den Hof (1927-1927)".
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