How do we prove physically that the Earth rotates on its axis and

revolves around the Sun? Newtonian physics was so compelling that it

was mostly accepted before there were ironclad physical demonstrations

of the Earth's daily rotation about its axis and annual revolution

(orbit) around the Sun. This lecture reviews three of these

demonstrations: the Coriolis Effect, the Foucault Pendulum, and Stellar

Parallaxes. This ties up the last loose-end of the Copernican

Revolution. Recorded 2006 Oct 19 in 100 Stillman Hall on the Columbus

campus of The Ohio State University.