Galileo's Pendulum

Greetings from northern Minnesota! Tomorrow, I will descend a half mile into the Soudan Iron Mine, where two particle detectors reside. The first is MINOS (Main Injector Neutrino Oscillation Search), which characterizes neutrinos originating from Fermilab. The second is CDMS (Cryogenic Dark Matter Search), one of a handful of detectors trying to find dark matter…