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 ChalkdustThings 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?Art meets maths