• Testing a camera's shutter speed with an LED, phototransistor, and oscilloscope http://www.circlemud.org/jelson/lomography_shutter/ 3 comments 29/11/2011 electronics
• Winning the Mega Millions lottery: How big a jackpot makes ticket-buying rational? http://www.circlemud.org/~jelson/megamillions 3 comments 14/1/2011 math