A baseball thrown by a major league pitcher has kinetic energy E = ½ mv2 = ½ (0.145 kg)×(40 m/s)2 = 116 Joules. The energy produced in each electron-positron collision in BaBar is about 68 billion times smaller! So how do we measure such minute energies? Read more about particle detector technologies used at BaBar and other particle physics experiments.
Last modified: Tue Nov 2 14:42:31 PST 2004