The temperature on April 18, 1947 was between 2.5 °C and 16.3 °C and averaged 9.9 °C. There was 11.6 hours of sunshine (83%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the east. Source: KNMI
January 25 » Thomas Goldsmith Jr. files a patent for a "Cathode Ray Tube Amusement Device", the first ever electronic game.
February 21 » In New York City, Edwin Land demonstrates the first "instant camera", the Polaroid Land Camera, to a meeting of the Optical Society of America.
April 30 » In Nevada, Boulder Dam is renamed Hoover Dam.
August 15 » India gains Independence from British rule after near 190 years of British company and crown rule, and joins the Commonwealth of Nations.
November 17 » American scientists John Bardeen and Walter Houser Brattain observe the basic principles of the transistor, a key element for the electronics revolution of the 20th century.
November 25 » New Zealand ratifies the Statute of Westminster and thus becomes independent of legislative control by the United Kingdom.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I182880.php : accessed December 29, 2025), "Hendrik Kloosterman (± 1947-1947)".
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