Jules Antoine Lissajous
Jules Antoine Lissajous, date and photographer unknown
Born	( 1822-03-04 ) 4 March 1822 Versailles , France
Died	24 June 1880 (1880-06-24) (aged 58) Plombieres-les-Dijon , France
Nationality	French
Known for	Lissajous figures
Scientific career
Fields	Physics

Jules Antoine Lissajous ( French pronunciation: [?yl ??twan lisa?u] ; 4 March 1822 in Versailles ? 24 June 1880 in Plombieres-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 .

See also [ edit ]

• Lissajous curve
• Lissajous orbit

References [ edit ]

External links [ edit ]

• O'Connor, John J.; Robertson, Edmund F. , "Jules Antoine Lissajous" , MacTutor History of Mathematics Archive , University of St Andrews

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