http://www.explainthatstuff.com/centrifuges.html http://www.explainthatstuff.com/centrifuges.html http://www.explainthatstuff.com/centrifuges.html http://www.explainthatstuff.com/centrifuges.html http://www.explainthatstuff.com/centrifuges.html http://www.explainthatstuff.com/centrifuges.html http://www.explainthatstuff.com/centrifuges.html http://www.explainthatstuff.com/centrifuges.html technically centripetal