April 30 » J. J. Thomson of the Cavendish Laboratory announces his discovery of the electron as a subatomic particle, over 1,800 times smaller than a proton (in the atomic nucleus), at a lecture at the Royal Institution in London.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
September 1 » The Tremont Street Subway in Boston opens, becoming the first underground rapid transit system in North America.
September 12 » Tirah Campaign: In the Battle of Saragarhi, ten thousand Pashtun tribesmen suffer several hundred casualties while attacking 21 Sikh soldiers in British service.
November 1 » The first Library of Congress building opens its doors to the public; the library had previously been housed in the Congressional Reading Room in the U.S. Capitol.
December 6 » London becomes the world's first city to host licensed taxicabs.
Day of death January 23, 1972
The temperature on January 23, 1972 was between 0.4 °C and 2.0 °C and averaged 1.2 °C. There was -0.1 mm of rain. The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southeast. Source: KNMI
In The Netherlands , there was from April 5, 1967 to Tuesday, July 6, 1971 the cabinet Biesheuvel I, with Mr. B.W. Biesheuvel (ARP) as prime minister.
In The Netherlands , there was from Thursday, July 20, 1972 to Friday, May 11, 1973 the cabinet Biesheuvel II, with Mr. B.W. Biesheuvel (ARP) as prime minister.
January 14 » Queen Margrethe II of Denmark ascends the throne, the first Queen of Denmark since 1412 and the first Danish monarch not named Frederick or Christian since 1513.
January 30 » Pakistan leaves the Commonwealth of Nations in protest of its recognition of breakaway Bangladesh.
February 1 » Kuala Lumpur becomes a city by a royal charter granted by the Yang di-Pertuan Agong of Malaysia.
February 3 » The first day of the seven-day 1972 Iran blizzard, which would kill at least 4,000 people, making it the deadliest snowstorm in history.
September 4 » Mark Spitz becomes the first competitor to win seven medals at a single Olympic Games.
September 21 » Philippine President Ferdinand Marcos begins authoritarian rule by declaring martial law.
When copying data from this family tree, please include a reference to the origin: Jeroen S.K. Joustra, "Family tree Joustra", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-joustra/I31.php : accessed March 1, 2026), "Sophia Koomans (1897-1972)".
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