October 13, 2008, Stanford’s Felix Bloch Professor of Physics, Leonard Susskind, discusses covariant and contra variant indices, tensor arithmetic, algebra and calculus, and the geometry of expanding space time. This Stanford Continuing Studies course is the fourth of a six-quarter sequence of classes exploring the essential theoretical foundations of modern physics. The topics covered in this course focus on classical mechanics. Leonard Susskind is the Felix Bloch Professor of Physics at Stanford University. Stanford Continuing Studies: continuingstudies.stanford.edu About Leonard Susskind: www.stanford.edu Stanford University Channel on YouTube: www.youtube.com