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.
May 26 » Dracula, a Gothic horror novel by Irish author Bram Stoker, is published.
June 22 » British colonial officers Charles Walter Rand and Lt. Charles Egerton Ayerst are assassinated in Pune, Maharashtra, India by the Chapekar brothers and Mahadeo Vinayak Ranade, who are later caught and hanged.
August 10 » German chemist Felix Hoffmann discovers an improved way of synthesizing acetylsalicylic acid (aspirin).
August 21 » Oldsmobile, an American automobile manufacturer and marque, is founded.
August 31 » Thomas Edison patents the Kinetoscope, the first movie projector.
Day of marriage August 28, 1930
The temperature on August 28, 1930 was between 16.6 °C and 30.9 °C and averaged 23.7 °C. There was 11.9 hours of sunshine (86%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south east. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
March 29 » Heinrich Brüning is appointed German Reichskanzler.
June 17 » U.S. President Herbert Hoover signs the Smoot–Hawley Tariff Act into law.
September 6 » Democratically elected Argentine president Hipólito Yrigoyen is deposed in a military coup.
October 3 » The German Socialist Labour Party in Poland – Left is founded.
October 27 » Ratifications exchanged in London for the first London Naval Treaty go into effect immediately, further limiting the expensive naval arms race among its five signatories.
November 11 » Patent number US1781541 is awarded to Albert Einstein and Leó Szilárd for their invention, the Einstein refrigerator.
When copying data from this family tree, please include a reference to the origin: Nico Blesgraaf, "Family tree Blesgraaf", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-blesgraaf/I225.php : accessed March 17, 2026), "Bernardus Hendrikus Blesgraaf (1897-????)".
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