The 2015 Porter Prize Problem is out! The Porter Prize is funded by Carroll Porter, ’32, and is awarded annually for the best solution to a complex physical problem. This year’s mind-boggling physics problem concerns a “rotary engine”, a heat engine whose cyclic process is a circle in the PV-plane. Check out a detailed statement of the problem, posted around SMC or available at http://course.knox.edu/physics130. Any Knox student may submit a solution. Turn in your solution to Prof. Tom Moses, D110 SMC, by 4 p.m. Friday May 1 and win a place in Knox history (and a cash prize).