National Council of Teachers of Mathematics
The Math Forum: Ellipsoid, Torus, Spherical Polygon Formulas
Curious as to what an ellipsoid is? Dr. Math provides a picture and a brief description. This site also has information pertaining to a torus, and spherical polygon.
Physics Central
Physics Central: Physics Buzz Blog : The Physics of Football
Football is a sport almost made for physicists. Newton's three laws of motion are at work during every play and little things like the unpredictable bounce of the "prolate spheroid" - the football - can throw kinks into a game no...