Force_extension_graph Published 26 September 2015 at 670 × 599 in The Mpemba paradox ← Previous Next → Force vs extension for an elastic band. This loop-shaped graph is the signature of hysteresis. Force vs extension for an elastic band. This loop-shaped graph is the signature of hysteresis. Jigsaw Jigsaw is a talented chess player and fervent climber. All articles by Jigsaw More from ChalkdustNEW! Pop-math book clubDo you have lots of unread pop math books on your shelves? Join our new monthly online book club!Things to makePlatonic shapes from tube maps, flexagons, and more mathematical craftWhat’s hot and what’s notOptimal Pac-ManGhostbusting with graph theoryReinventing 2DWhat a difference a matrix makesYour social networksHow similar are you to your friends?