![Jean Bernard Leon Foucault (1819-1860) French physicist. Measured velocity of light: Proved rotation of Earth on its axis with Foucault's pendulum, 1851. Invented Gyroscope (1857): Improved the reflecting telescope. Wood engraving Stock Photo - Alamy Jean Bernard Leon Foucault (1819-1860) French physicist. Measured velocity of light: Proved rotation of Earth on its axis with Foucault's pendulum, 1851. Invented Gyroscope (1857): Improved the reflecting telescope. Wood engraving Stock Photo - Alamy](https://c8.alamy.com/comp/TXGW68/jean-bernard-leon-foucault-1819-1860-french-physicist-measured-velocity-of-light-proved-rotation-of-earth-on-its-axis-with-foucaults-pendulum-1851-invented-gyroscope-1857-improved-the-reflecting-telescope-wood-engraving-TXGW68.jpg)
Jean Bernard Leon Foucault (1819-1860) French physicist. Measured velocity of light: Proved rotation of Earth on its axis with Foucault's pendulum, 1851. Invented Gyroscope (1857): Improved the reflecting telescope. Wood engraving Stock Photo - Alamy
![Jean Bernard Leon Foucault grave in Montmartre Cemetery in the city of Paris In France In Europe Stock Photo - Alamy Jean Bernard Leon Foucault grave in Montmartre Cemetery in the city of Paris In France In Europe Stock Photo - Alamy](https://c8.alamy.com/comp/AHYB1C/jean-bernard-leon-foucault-grave-in-montmartre-cemetery-in-the-city-AHYB1C.jpg)
Jean Bernard Leon Foucault grave in Montmartre Cemetery in the city of Paris In France In Europe Stock Photo - Alamy
![Jean Bernard Léon Foucault - AIF - Associazione per l'Insegnamento della Fisica : AIF – Associazione per l'Insegnamento della Fisica Jean Bernard Léon Foucault - AIF - Associazione per l'Insegnamento della Fisica : AIF – Associazione per l'Insegnamento della Fisica](https://www.aif.it/wp-content/uploads/fisici/Jean_Foucault.jpg)