The subject of this month's feature column from the American Mathematical Society Online is the solution to the "Three Body Problem" of Newtonian mechanics. The problem deals with three orbiting bodies of equal mass and the paths that they will take relative to one another. Solutions have been proposed by many, including Euler, Lagrange, and G.W. Hill. The article notes that solutions are...

New physics teaching resource sites continue to pop up every day, and this one from the University of Minnesota's Physics Education Research Group is a good find. The site is divided into two areas, one covering mechanics problems, and the other covering electricity and magnetic problems. Within these two areas, visitors can look through examples of linear kinematics problems, force problems,...