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Thomas O earned this badge 7 times
feb 4 at 22:04Why is the universe so big?
jan 7 at 8:45What causes compressed air (from “Dust Off” cans) to freeze, but only when turned upside down?
nov 11 at 1:26Newton's rings: What causes the other rings?
may 5 '12 at 8:01How efficient is an electric heater?
mar 27 '12 at 14:55Why is a 1mW laser dangerous?
dec 15 '11 at 16:38Why does GPS depend on relativity?