Template:Selected anniversaries/December 25: Difference between revisions

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||1724: John Michell born ... natural philosopher and clergyman who provided pioneering insights in a wide range of scientific fields, including astronomy, geology, optics, and gravitation. Considered "one of the greatest unsung scientists of all time", he was the first person known to propose the existence of black holes in publication, the first to suggest that earthquakes travel in waves, the first to explain how to manufacture artificial magnets, and the first to apply statistics to the study of the cosmos, recognizing that double stars were a product of mutual gravitation. He also invented an apparatus to measure the mass of the Earth. Pic: https://www.ecured.cu/John_Michell Pic search good: https://www.google.com/search?q=john+michell
||1724: John Michell born ... natural philosopher and clergyman who provided pioneering insights in a wide range of scientific fields, including astronomy, geology, optics, and gravitation. Considered "one of the greatest unsung scientists of all time", he was the first person known to propose the existence of black holes in publication, the first to suggest that earthquakes travel in waves, the first to explain how to manufacture artificial magnets, and the first to apply statistics to the study of the cosmos, recognizing that double stars were a product of mutual gravitation. He also invented an apparatus to measure the mass of the Earth. Pic: https://www.ecured.cu/John_Michell Pic search good: https://www.google.com/search?q=john+michell


File:Filippo Mazzei.jpg|link=Philip Mazzei (nonfiction)|1730: Physician and activist [[Filippo Mazzei (nonfiction)|Filippo Mazzei]] born. He will act as an agent to purchase arms for Virginia during the American Revolutionary War.
File:Filippo Mazzei.jpg|link=Filippo Mazzei (nonfiction)|1730: Physician and activist [[Filippo Mazzei (nonfiction)|Filippo Mazzei]] born. Mazzei will act as an agent to purchase arms for Virginia during the American Revolutionary War.


||1758: Halley's Comet is sighted by Johann Georg Palitzsch, confirming Edmund Halley's prediction of its passage. This was the first passage of a comet predicted ahead of time. Pic.
||1758: Halley's Comet is sighted by Johann Georg Palitzsch, confirming Edmund Halley's prediction of its passage. This was the first passage of a comet predicted ahead of time. Pic.


File:Claude Chappe.jpg|link=Claude Chappe (nonfiction)|1763: Inventor [[Claude Chappe (nonfiction)|Claude Chappe]] born. He will invent and develop a practical semaphore system that will span all of France -- the first practical telecommunications system of the industrial age.
File:Claude Chappe.jpg|link=Claude Chappe (nonfiction)|1763: Inventor [[Claude Chappe (nonfiction)|Claude Chappe]] born. Chappe will invent and develop a practical semaphore system that will span all of France -- the first practical telecommunications system of the industrial age.


||1777: Francesco Maria Zanotti dies ... philosopher and writer. His 1741 essay on the 'attractive force of ideas' defended a view of the association of ideas influenced by Newtonian physics. Pic search good: https://www.google.com/search?q=Francesco+Maria+Zanotti
||1777: Francesco Maria Zanotti dies ... philosopher and writer. His 1741 essay on the 'attractive force of ideas' defended a view of the association of ideas influenced by Newtonian physics. Pic search good: https://www.google.com/search?q=Francesco+Maria+Zanotti

Revision as of 18:40, 19 March 2020