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.
June 16 » A treaty annexing the Republic of Hawaii to the United States is signed; the Republic would not be dissolved until a year later.
July 2 » British-Italian engineer Guglielmo Marconi obtains a patent for radio in London.
July 26 » Anglo-Afghan War: The Pashtun fakir Saidullah leads an army of more than 10,000 to begin a siege of the British garrison in the Malakand Agency of the North West Frontier Province of India.
September 1 » The Tremont Street Subway in Boston opens, becoming the first underground rapid transit system in North America.
December 30 » The British Colony of Natal annexes Zululand.
Day of death May 16, 1970
The temperature on May 16, 1970 was between 11.4 °C and 17.4 °C and averaged 14.0 °C. There was 3.2 hours of sunshine (20%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the east-southeast. Source: KNMI
When copying data from this family tree, please include a reference to the origin: Johan Arie Eykelhoff, "Family tree Eykelhoff, Eijkelhoff", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-eykelhoff-eijkelhoff/I442.php : accessed March 3, 2026), "Cornelis Blanken (1897-1970)".
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