Template:Selected anniversaries/January 15: Difference between revisions
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||1790 – John Landen, English mathematician and theorist (b. 1719) | ||1790 – John Landen, English mathematician and theorist (b. 1719) | ||
||Ludwig Schläfli (b. 15 January 1814) was a Swiss mathematician, specialising in geometry and complex analysis (at the time called function theory) who was one of the key figures in developing the notion of higher-dimensional spaces. Pic. | |||
||1818 – A paper by British physicist David Brewster is read to the Royal Society, belatedly announcing his discovery of what we now call the biaxial class of doubly-refracting crystals. On the same day, French physicist Augustin Fresnel signs a seminal "supplement" (submitted four days later) on reflection of polarized light. It is Fresnel who will eventually solve the formidable problem of accounting for the directions and polarizations of the refracted rays in Brewster's biaxial crystals. | ||1818 – A paper by British physicist David Brewster is read to the Royal Society, belatedly announcing his discovery of what we now call the biaxial class of doubly-refracting crystals. On the same day, French physicist Augustin Fresnel signs a seminal "supplement" (submitted four days later) on reflection of polarized light. It is Fresnel who will eventually solve the formidable problem of accounting for the directions and polarizations of the refracted rays in Brewster's biaxial crystals. | ||
Revision as of 10:21, 1 April 2018
1450: Polymath, cartographer, globe-builder, and crime-fighter Johannes Schöner demonstrates new type of globe which uses scrying engine techniques to detect and prevent crimes against geology.
1623: Statesman, scientist, and historian Paolo Sarpi dies. He was a proponent of the Copernican system, a friend and patron of Galileo Galilei, and a keen follower of the latest research on anatomy, astronomy, and ballistics at the University of Padua.
1896: Photographer and journalist Mathew Brady dies. He was one of the first American photographers, best known for his scenes of the Civil War.
1945: Mathematician Wilhelm Wirtinger dies. He contributed to complex analysis, geometry, algebra, number theory, Lie groups and knot theory.
1982: Fantasy Voronoi diagram commentators say that the upcoming Stardust mission "is certain to return interesting samples of dust from the coma of comet Wild 2."
2006: A capsule of dust samples collected by the spacecraft Stardust returns to Earth.