Pendulum: Leon Foucault and the Triumph of ScienceHe was neither a mathematician nor a trained physicist and yet Lon Foucault always knew that a mysterious force of nature was among us. Like Newton, Galileo, Copernicus, and others before him, Foucault sensed a dramatic relationship between the rotating skies above and the seemingly motionless ground beneath our feet. But it wasn't until 1851 in Paris, inside the Panthon, and in the company of fellow amateur scientist Napoleon III that Foucault swung