March 1 » Henri Becquerel discovers radioactive decay.
April 15 » Closing ceremony of the Games of the I Olympiad in Athens, Greece.
June 2 » Guglielmo Marconi applies for a patent for his wireless telegraph.
June 28 » An explosion in the Newton Coal Company's Twin Shaft Mine in Pittston, Pennsylvania results in a massive cave-in that kills 58 miners.
November 1 » A picture showing the bare breasts of a woman appears in National Geographic magazine for the first time.
December 10 » Alfred Jarry's Ubu Roi premieres in Paris. A riot breaks out at the end of the performance.
Day of death January 26, 1947
The temperature on January 26, 1947 was between -8.4 °C and -3.9 °C and averaged -6.1 °C. There was 0.2 mm of rain. There was 3.5 hours of sunshine (40%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
February 18 » First Indochina War: The French gain complete control of Hanoi after forcing the Viet Minh to withdraw to mountains.
April 28 » Thor Heyerdahl and five crew mates set out from Peru on the Kon-Tiki to demonstrate that Peruvian natives could have settled Polynesia.
August 4 » The Supreme Court of Japan is established.
October 20 » The House Un-American Activities Committee begins its investigation into Communist infiltration of the Hollywood film industry, resulting in a blacklist that prevents some from working in the industry for years.
December 6 » The Everglades National Park in Florida is dedicated.
December 23 » The transistor is first demonstrated at Bell Laboratories.
When copying data from this family tree, please include a reference to the origin: Theo Kelner, "Family tree Kelner", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-kelner/I1906.php : accessed February 6, 2026), "Abram Koomen (± 1868-1947)".
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