MentalFloss.com Deputy Editor. Karaoke and tsunami obsessive. Nerd. Future crazy cat lady.
Purdue University professor Mark French has been using a subsonic ping pong gun to teach his students about physics. But why be subsonic when you can go supersonic? Not satisfied with propelling the balls a measly 400mph, French and his students recently built a ping pong bazooka that fires the balls at an astounding 900mph—135mph faster than the speed of sound.... READ ON
They don't make valentines like they used to. ... READ ON
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