|Enlightened||First to answer and accepted with score of 10 or more. This badge can be awarded multiple times.|
Mark Eichenlaub earned this badge 7 times
apr 1 at 1:31Why there's a whirl when you drain the bathtub?
jan 19 at 14:43An example which contradict to Newton's 3rd law?
jan 17 at 21:36How do I develop an intuitive model of spacetime?
oct 17 '11 at 2:11Why is moonlight less colourful than yellow light?
aug 6 '11 at 8:21Can pockets of air exist underwater?
dec 1 '10 at 15:17How efficient is an electric heater?
nov 6 '10 at 17:58Fourier transformation in nature/natural physics?