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Dan earned this badge 7 times
apr 10 at 15:07Quantum mechanics - how can the energy be complex?
mar 26 at 23:43Does the sun rotate?
jul 21 '11 at 16:06Essential background for QFT study
jul 20 '11 at 9:58Why can't we feel the Earth turning?
jul 6 '11 at 19:33Are all electrons identical?