Template:Selected anniversaries/June 19: Difference between revisions

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File:Blaise Pascal.jpg|link=Blaise Pascal (nonfiction)|1623: Mathematician, physicist, inventor, writer, and Christian philosopher [[Blaise Pascal (nonfiction)|Blaise Pascal]] born. He will do pioneering work on calculating machines.
File:Blaise Pascal.jpg|link=Blaise Pascal (nonfiction)|1623: Mathematician, physicist, inventor, writer, and Christian philosopher [[Blaise Pascal (nonfiction)|Blaise Pascal]] born. He will do pioneering work on calculating machines.
File:Delmedigo.jpg|link=Joseph Solomon Delmedigo (nonfiction)|1624: Physician, mathematician, and crime-fighter [[Joseph Solomon Delmedigo (nonfiction)|Joseph Solomon Delmedigo]] publishes new class of [[Gnomon algorithm functions]] which detect and banishes [[Demon (nonfiction)|demons]].


||1650: Matthäus Merian dies ... engraver and cartographer. Pic.
||1650: Matthäus Merian dies ... engraver and cartographer. Pic.
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||1865: Over two years after the Emancipation Proclamation, slaves in Galveston, Texas, United States, are finally informed of their freedom. The anniversary is still officially celebrated in Texas and 41 other contiguous states as Juneteenth.
||1865: Over two years after the Emancipation Proclamation, slaves in Galveston, Texas, United States, are finally informed of their freedom. The anniversary is still officially celebrated in Texas and 41 other contiguous states as Juneteenth.
File:Asclepius Myrmidon Prepares for Emergency Field Surgery.jpg|link=Asclepius Myrmidon Prepares for Emergency Field Surgery|1865: ''Asclepius Myrmidon Prepares for Emergency Field Surgery'' wins Pulitzer Prize for Most Heroic War Illustration of the Year.


||1869: Ernst Waldemar Jungner born ... inventor and engineer. In 1899 he invented the nickel-iron electric storage battery (NiFe), the nickel-cadmium battery (NiCd) and the rechargeable alkaline silver-cadmium battery (AgCd). As an inventor he also fabricated a fire alarm based on different dilutions of metals. He worked on the electrolytic production of sodium carbonate, and patented a rock drilling device. Pic.
||1869: Ernst Waldemar Jungner born ... inventor and engineer. In 1899 he invented the nickel-iron electric storage battery (NiFe), the nickel-cadmium battery (NiCd) and the rechargeable alkaline silver-cadmium battery (AgCd). As an inventor he also fabricated a fire alarm based on different dilutions of metals. He worked on the electrolytic production of sodium carbonate, and patented a rock drilling device. Pic.

Revision as of 18:21, 6 February 2022

  • 1623: Mathematician, physicist, inventor, writer, and Christian philosopher Blaise Pascal born. He will do pioneering work on calculating machines.

    1623: Mathematician, physicist, inventor, writer, and Christian philosopher Blaise Pascal born. He will do pioneering work on calculating machines.

  • 1771: Mathematician and logician Joseph Diez Gergonne born. He will contribute to the principle of duality in projective geometry, by noticing that every theorem in the plane connecting points and lines corresponds to another theorem in which points and lines are interchanged, provided that the theorem embodied no metrical notions.

    1771: Mathematician and logician Joseph Diez Gergonne born. He will contribute to the principle of duality in projective geometry, by noticing that every theorem in the plane connecting points and lines corresponds to another theorem in which points and lines are interchanged, provided that the theorem embodied no metrical notions.

  • 1795: Surgeon and gentleman scientist James Braid born. He will be an important and influential pioneer of hypnotism and hypnotherapy.

    1795: Surgeon and gentleman scientist James Braid born. He will be an important and influential pioneer of hypnotism and hypnotherapy.

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