Round Triangles!

Why circles are round (and triangles too!) rotor in a square hole: http://www.youtube.com/watch?v=KUeQugasOkk more info on reuleaux rotors and other SWEET stuff: http://www.howround.com minutephysics is now on Google+ - http://bit.ly/qzEwc6 And facebook - http://facebook.com/minutephysics And twitter - @minutephysics Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute! Music by Nathaniel Schroeder NEW ALBUM!! -- http://juliansaporiti.bandcamp.com/album/lusitania youtube: http://bit.ly/pakJLE Created by Henry Reich