Jean Bernard Léon Foucault (French pronunciation: ​[ʒɑ̃ bɛʁnaʁ leɔ̃ fuko]) (18 September 1819 – 11 Februar 1868) wis a French physicist best kent for his demonstration o the Foucault pendulum, a device demonstratin the effect o the Yird's rotation. He an aa made an early meisurment o the speed o licht, discovered eddy currents, an is creditit wi namin the gyroscope (awtho he didna invent it).

Léon Foucault
Léon Foucault (1819–1868)
Born18 September 1819
Paris, Kinrick o Fraunce
Dee'd11 Februar 1868(1868-02-11) (aged 48)
Paris, Seicont French Empire
ResidenceFraunce
NaitionalityFrench
Alma materVarsity o Paris
Kent forFoucault pendulum, eddy currents
AwairdsCopley Medal (1855)
Scientific career
FieldsPhysics
InstitutionsParis Observatory