Template:Selected anniversaries/April 18: Difference between revisions
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||1770: William Nicol born ... geologist and physicist who invented the Nicol prism, the first device for obtaining plane-polarized light, in 1828. Pic: memorial plaque. | ||1770: William Nicol born ... geologist and physicist who invented the Nicol prism, the first device for obtaining plane-polarized light, in 1828. Pic: memorial plaque. | ||
File:Johan Carl Wilcke.jpg|link=Johan Wilcke (nonfiction)|1796: Physicist [[Johan Wilcke (nonfiction)|Johan Carl Wilcke]] dies. | File:Johan Carl Wilcke.jpg|link=Johan Wilcke (nonfiction)|1796: Physicist [[Johan Wilcke (nonfiction)|Johan Carl Wilcke]] dies. Wilcke invented the electrophorus, and calculated the latent heat of ice. | ||
||1813: James McCune Smith born ... physician, apothecary, abolitionist, and author ... He used his training in medicine and statistics to refute common misconceptions about race, intelligence, medicine, and society in general. Invited as a founding member of the New York Statistics Society in 1852, which promoted a new science, he was elected as a member in 1854 of the recently founded American Geographic Society. But he was never admitted to the American Medical Association or local medical associations ... also an abolitionist. Pic. | ||1813: James McCune Smith born ... physician, apothecary, abolitionist, and author ... He used his training in medicine and statistics to refute common misconceptions about race, intelligence, medicine, and society in general. Invited as a founding member of the New York Statistics Society in 1852, which promoted a new science, he was elected as a member in 1854 of the recently founded American Geographic Society. But he was never admitted to the American Medical Association or local medical associations ... also an abolitionist. Pic. | ||
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||1849: Adolf Slaby born ... electronics pioneer. Pic. | ||1849: Adolf Slaby born ... electronics pioneer. Pic. | ||
File:Karl Mikhailovich Peterson.jpg|link=Karl Mikhailovich Peterson (nonfiction)|1860: Mathematician [[Karl Mikhailovich Peterson (nonfiction)|Karl Mikhailovich Peterson]] uses embedded hypersurfaces in a Euclidean space to | File:Karl Mikhailovich Peterson.jpg|link=Karl Mikhailovich Peterson (nonfiction)|1860: Mathematician and [[Gnomon algorithm]] theorist [[Karl Mikhailovich Peterson (nonfiction)|Karl Mikhailovich Peterson]] uses embedded hypersurfaces in a Euclidean space to detect and prevent [[crimes against mathematical constants]]. | ||
File:Justus von Liebig circa 1866.jpg|link=Justus von Liebig (nonfiction)|1873: Chemist and academic [[Justus von Liebig (nonfiction)|Justus von Liebig]] dies. Von Liebeg made pioneering contributions to organic chemistry, especially agricultural and biological chemistry; he is known as the "Father of the fertilizer industry". | File:Justus von Liebig circa 1866.jpg|link=Justus von Liebig (nonfiction)|1873: Chemist and academic [[Justus von Liebig (nonfiction)|Justus von Liebig]] dies. Von Liebeg made pioneering contributions to organic chemistry, especially agricultural and biological chemistry; he is known as the "Father of the fertilizer industry". | ||
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||1892: Eugene Houdry born ... mechanical engineer and inventor. Houdry invented catalytic cracking of petroleum feed stocks. Pic. | ||1892: Eugene Houdry born ... mechanical engineer and inventor. Houdry invented catalytic cracking of petroleum feed stocks. Pic. | ||
File:Charles Sanders Peirce in 1859.jpg|link=Charles Sanders Peirce (nonfiction)|1891: [[Charles Sanders Peirce (nonfiction)|Charles Sanders Peirce]] | File:Charles Sanders Peirce in 1859.jpg|link=Charles Sanders Peirce (nonfiction)|1891: Mathematician, logician, and [[APTO]] field operative [[Charles Sanders Peirce (nonfiction)|Charles Sanders Peirce]] uses the Four Incapacities to defeat the notorious [[Forbidden Ratio]] in single combat. | ||
||1892: Dmitrii Menshov born ... mathematician known for his contributions to the theory of trigonometric series. Pic search (fierce). | ||1892: Dmitrii Menshov born ... mathematician known for his contributions to the theory of trigonometric series. Pic search (fierce). | ||
Revision as of 18:35, 18 April 2020
1796: Physicist Johan Carl Wilcke dies. Wilcke invented the electrophorus, and calculated the latent heat of ice.
1860: Mathematician and Gnomon algorithm theorist Karl Mikhailovich Peterson uses embedded hypersurfaces in a Euclidean space to detect and prevent crimes against mathematical constants.
1873: Chemist and academic Justus von Liebig dies. Von Liebeg made pioneering contributions to organic chemistry, especially agricultural and biological chemistry; he is known as the "Father of the fertilizer industry".
1891: Mathematician, logician, and APTO field operative Charles Sanders Peirce uses the Four Incapacities to defeat the notorious Forbidden Ratio in single combat.
1907: Jazz drummer and theoretical physicist Albert Einstein hosts an all-star benefit concert to raise money for the rebuilding of San Francisco.
1945: Electrical engineer and physicist John Ambrose Fleming dies. Fleming invented the thermionic valve, also known as the vacuum tube.
1946: Mathematician and academic Alice Beta writes a letter to Albert Einstein, warning Einstein that his theories are at risk from the so-called Forbidden Ratio and other criminal mathematical functions.
1955: Physicist, engineer, and academic Albert Einstein dies. Einstein developed the theory of relativity, one of the two pillars of modern physics (alongside quantum mechanics).
2011: Mathematician Curt Meyer dies. Meyer made notable contributions to number theory, including an alternative solution to the class number 1 problem, building on the original Stark–Heegner theorem.
2018: Signed first edition of Purple Racer unexpectedly develops artificial intelligence after being exposed to Cherenkov radiation during an unauthorized experiment in high-energy literature.
