The discoveries of Grimaldi and of Fresnel in regard to interferences, those of Faraday, of Arago, of foucault, of Fraunhofer, of Kirchoff, and of hundreds of others owed something to "fortune."
"Essay on the Creative Imagination"
Th. Ribot
He split up the iron core of the armature into thin laminations, separated by paper, thus practically suppressing foucault currents therein and resulting heating effect.
"Edison, His Life and Inventions"
Frank Lewis Dyer and Thomas Commerford Martin
From February 26th to April 20th, Professor Rumi made observations on the after-shocks by means of the foucault pendulum erected at Genoa for demonstrating the rotation of the earth.
"A Study of Recent Earthquakes"
Charles Davison