Jules Antoine Lissajous
(1822-1880)
French mathematician
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Jules Antoine Lissajous (4 March 1822 in Versailles – 24 June 1880 in Plombières-les-Dijon) was a French physicist, after whom Lissajous figures are named. Among other innovations, Lissajous invented the Lissajous apparatus, a device that creates the figures that bear his name. In it, a beam of light is bounced off a mirror attached to a vibrating tuning fork, and then reflected off a second mirror attached to a perpendicularly oriented vibrating tuning fork (usually of a different pitch, creating a specific harmonic interval), onto a wall, resulting in a Lissajous figure. This led to the invention of other apparatus such as the harmonograph.
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| Born |
4 March 1822 Versailles
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| Died |
24 June 1880 (aged 58) Plombières-les-Dijon, France
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| Zodiac | Pisces |
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