Foucault and Freud (and maybe Margaret Mead) should both be consulted on the complex sexual dynamics at play here.
I think the first example of that is in 1979 Foucault supporting the Iranian revolution.
Derrida, Deleuze, and Foucault were still in short trousers at the time.
French physicist who determined that light travels more slowly in water than in air, confirming predictions made by the wave theory of light. In 1850 Foucault also measured the absolute velocity of light. In 1851, by using a type of pendulum that is now named after him, Foucault demonstrated the rotation of the Earth, and in 1852 perfected a gyroscope for the same purpose.