Day: February 5, 2009

A few months ago, I read an article in The Physics Teacher (published by the American Association of Physics Teachers) on measuring the speed of sound using a couple of microphones hooked up to a computer’s line-in jack.  Apart from having to make a trip to Radio Shack to buy some parts to convert two standard unpowered microphones into a pair of powered microphones for stereo input, the process was amazingly straightforward.  I did a quick proof-of-concept in the dining room one evening and go