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.
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.
August 31 » Thomas Edison patents the Kinetoscope, the first movie projector.
Day of death June 3, 1987
The temperature on June 3, 1987 was between 10.6 °C and 16.6 °C and averaged 13.5 °C. There was 1.2 mm of rain during 2.0 hours. There was -0.1 hours of sunshine (0%). The heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. Source: KNMI
In The Netherlands , there was from Tuesday, November 4, 1986 to Tuesday, November 7, 1989 the cabinet Lubbers II, with Drs. R.F.M. Lubbers (CDA) as prime minister.
February 2 » After the 1986 People Power Revolution, the Philippines enacts a new constitution.
May 1 » Pope John Paul II beatifies Edith Stein, a Jewish-born Carmelite nun who was gassed in the Nazi concentration camp at Auschwitz.
August 31 » Thai Airways Flight 365 crashes into the ocean near Ko Phuket, Thailand, killing all 83 aboard.
September 13 » Goiânia accident: A radioactive object is stolen from an abandoned hospital in Goiânia, Brazil, contaminating many people in the following weeks and causing some to die from radiation poisoning.
September 16 » The Montreal Protocol is signed to protect the ozone layer from depletion.
November 8 » Remembrance Day bombing: A Provisional IRA bomb explodes in Enniskillen, Northern Ireland during a ceremony honouring those who had died in wars involving British forces. Twelve people are killed and sixty-three wounded.
When copying data from this family tree, please include a reference to the origin: Tijs van den Brink, "Parentele of Geurt Jacobs", database, Genealogy Online (https://www.genealogieonline.nl/geurt-jacobs/I44766.php : accessed January 28, 2026), "Aalt Leijenhorst (1897-1987)".
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