What was the nationality of the namesake of the Foucault crater?
French
Title: Birmingham (crater)
Passage: Birmingham is the surviving remnant of a lunar crater.  It is named after the astronomer John Birmingham (not, as is often stated, the British city nor its Alabama namesake).
Title: Léon Foucault
Passage: Jean Bernard Léon Foucault (] ; 18 September 1819 – 11 February 1868) was a French physicist best known for his demonstration of the Foucault pendulum, a device demonstrating the effect of the Earth's rotation.  He also made an early measurement of the speed of light, discovered eddy currents, and is credited with naming the gyroscope.
Title: Foucault (crater)
Passage: Foucault is a small lunar impact crater that lies along the southern edge of Mare Frigoris, to the southeast of the crater Harpalus.  In the rugged terrain to the south of Foucault is Sharp.  The outer perimeter of Foucault forms a somewhat irregular circle, with slight outward bulges to the south and northeast.  The inner wall of the rim is not notably terraced, and slopes down directly to the uneven floor.  It is named after physicist Léon Foucault, most famous for the Foucault pendulum.
Léon Foucault Foucault (crater)