In 1978, a Foucault pendulum was installed in the Administration Building, now called Grawemeyer Hall, at the University of Louisville. ... The observed period of swing is 9.4 s, corresponding to a length of a simple pendulum of about 72.1 ft. ... Verne Baxter and Samuel Bell from the Department of Electrical Engineering would provide the circuitry and sensing apparatus to control the magnet which was needed to maintain the steady swing of the pendulum. ...