Template:Selected anniversaries/May 15: Difference between revisions
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||1740: Ephraim Chambers dies ... writer and encyclopaedist, who is primarily known for producing the Cyclopaedia, or a Universal Dictionary of Arts and Sciences. No DOB. Pic: book cover. | ||1740: Ephraim Chambers dies ... writer and encyclopaedist, who is primarily known for producing the Cyclopaedia, or a Universal Dictionary of Arts and Sciences. No DOB. Pic: book cover. | ||
||1773: Alban Butler dies ... priest and hagiographer. Pic search | ||1773: Alban Butler dies ... priest and hagiographer. Pic search. | ||
||1793: Diego Marín Aguilera flies a glider for "about 360 meters", at a height of 5–6 meters, during one of the first attempted manned flights. Pic. | ||1793: Diego Marín Aguilera flies a glider for "about 360 meters", at a height of 5–6 meters, during one of the first attempted manned flights. Pic. | ||
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File:Asclepius Myrmidon Prepares for Emergency Field Surgery.jpg|link=Asclepius Myrmidon Prepares for Emergency Field Surgery|1864: ''Asclepius Myrmidon Prepares for Emergency Field Surgery'' incorporated into army medical manuals on both sides of the American Civil War. | File:Asclepius Myrmidon Prepares for Emergency Field Surgery.jpg|link=Asclepius Myrmidon Prepares for Emergency Field Surgery|1864: ''Asclepius Myrmidon Prepares for Emergency Field Surgery'' incorporated into army medical manuals on both sides of the American Civil War. | ||
||1891: Fritz Feigl born ... chemist and academic. Pic search | ||1891: Fritz Feigl born ... chemist and academic. Pic search. | ||
||1900: Ida Rhodes born ... mathematician, pioneer in computer programming. Pic. | ||1900: Ida Rhodes born ... mathematician, pioneer in computer programming. Pic. | ||
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||1939: Mathematician Brian Hartley born. He will specialize in group theory. Pic: http://www.maths.manchester.ac.uk/about-us/history/brian-hartley/ | ||1939: Mathematician Brian Hartley born. He will specialize in group theory. Pic: http://www.maths.manchester.ac.uk/about-us/history/brian-hartley/ | ||
||1944: Harold P. Brown dies ... electrical engineer and inventor known for his activism in the late 1880s against the use of alternating current for electric lighting in New York City and around the country (during the "War of Currents"). No DOD. Pic. | |||
||1944: Chicago Pile-3 (CP-3) was the first heavy water reactor in the world, going critical on 15 May 1944. It was used in the experimental physics work of the Metallurgical Laboratory for the Manhattan Project. Pic. | ||1944: Chicago Pile-3 (CP-3) was the first heavy water reactor in the world, going critical on 15 May 1944. It was used in the experimental physics work of the Metallurgical Laboratory for the Manhattan Project. Pic. | ||
Revision as of 04:26, 21 April 2020
1579: Mathematician and physicist Thomas Fincke invents new type of scrying engine which pre-visualizes tangents and secants. He will use the engine to detect and expose crimes against mathematical constants.
1618: Johannes Kepler confirms his previously rejected discovery of the third law of planetary motion (he first discovered it on March 8 but soon rejected the idea after some initial calculations were made).
1801: Mathematician Joseph Ludwig Raabe born. He will discover Raabe's ratio test, which determines the convergence or divergence of an infinite series, in some cases.
1836: Astronomer Francis Baily observes "Baily's beads" during an annular eclipse.
1864: Asclepius Myrmidon Prepares for Emergency Field Surgery incorporated into army medical manuals on both sides of the American Civil War.
2017: Three Kings voted Picture of the Day by the citizens of New Minneapolis, Canada.
2019: New study says that Greedy coloring algorithms "have been systematically corrupted by a consortium of math criminals including Anarchimedes and Forbidden Ratio." (Source: APTO crime report.)