April 8 » In Pollock v. Farmers' Loan & Trust Co. the Supreme Court of the United States declares unapportioned income tax to be unconstitutional.
May 7 » In Saint Petersburg, Russian scientist Alexander Stepanovich Popov demonstrates to the Russian Physical and Chemical Society his invention, the Popov lightning detector—a primitive radio receiver. In some parts of the former Soviet Union the anniversary of this day is celebrated as Radio Day.
November 8 » While experimenting with electricity, Wilhelm Röntgen discovers the X-ray.
December 28 » The Lumière brothers perform for their first paying audience at the Grand Cafe in Boulevard des Capucines.
December 28 » Wilhelm Röntgen publishes a paper detailing his discovery of a new type of radiation, which later will be known as x-rays.
Day of death October 12, 1961
The temperature on October 12, 1961 was between 6.3 °C and 18.3 °C and averaged 11.1 °C. There was 0.1 mm of rain. There was 7.5 hours of sunshine (69%). The almost cloudless was. The average windspeed was 1 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
January 27 » The Soviet submarine S-80 sinks when its snorkel malfunctions, flooding the boat.
April 25 » Robert Noyce is granted a patent for an integrated circuit.
May 19 » Venera program: Venera 1 becomes the first man-made object to fly by another planet by passing Venus (the probe had lost contact with Earth a month earlier and did not send back any data).
August 11 » The former Portuguese territories in India of Dadra and Nagar Haveli are merged to create the Union Territory Dadra and Nagar Haveli.
September 1 » The first conference of the Non-Aligned Countries is held in Belgrade, Yugoslavia.
October 30 » The Soviet Union detonates the Tsar Bomba, the most powerful explosive device ever detonated.
When copying data from this family tree, please include a reference to the origin: Lucas van Heeren, "Genealogy Van der Wulp", database, Genealogy Online (https://www.genealogieonline.nl/genealogie-van-der-wulp/I6462.php : accessed May 26, 2024), "Jannigje Cornelia de GEUS (1895-1961)".
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