Slinky Treadmill @exploratorium: kinetic motion energy transfers to elastic potential energy and then back to kinetic energy in a cycling process as a slinky spring "walks" down an incline. Put the system on a treadmill such as this one at the Exploratorium in San Francisco and the walking behavior can be explored for many minutes. Note that after a while the slinky's walking becomes erratic. With special thanks to the Exploratorium! Credit @physicsfun.