Thanks funny site <a href=" http://www.leezasurfaces.com/blood-wedding-essay/#reproach ">search dissertations</a> Using an internal flywheel capable of reaching speeds of 20,000 revolutions per minute, the M-Blocks are able to move about without any external parts. To move a block, the flywheel is accelerated and then quickly stopped – imparting its angular momentum to the cube. A series of magnets on each edge and surface of the blocks are arranged to facilitate two cubes attaching or moving around to each other.