Experience momentum and conservation of energy! Named for Scottish theoretical physicist James Clerk Maxwell, the Maxwell Wheel demonstrates conservation of mechanical energy. Simply hand roll the wheel up the supporting cords and release. As it falls the wheel releases kinetic energy; when it reaches the bottom the kinetic energy changes to potential energy and it rolls back up again . . . over and over again until all the energy is lost to friction. Fascinating and addictive way to see science in action! Creative, high-quality gift you’ll be proud to give to someone special! Great for conference rooms, lobbies and offices.