Links:Perpetual motion machine


 * The perpetual myth of free energy BBC News website, July 9, 2007


 * Inventor of the Week Archive A short biography of Blaise Pascal published on a page from the website of the Massachusetts Institute of Technology, containing this statement: "Pascal worked on many versions of the (mechanical calculator) devices, leading to his attempt to create a perpetual motion machine."


 * The Physical Principles of Unworkable Devices Donald E. Simanek, Professor Emeritus, Physics Department, Lockhaven University of Pennsylvania.


 * Hans-Peter's Unpublished publications. HP's Perpetuum Mobile


 * Pravda.Ru, 23.07.2005 Another perpetual motor built in Russia


 * 14.04.2009, Pravda.Ru Russian scientists test perpetual motion machine in space