Mould effect

Etymology
Named after, science presenter who popularized the effect in a video.

Proper noun

 * 1) A counterintuitive physical phenomenon observed with a chain of beads placed inside a jar: when one end of the chain is yanked from the jar and allowed to fall to the floor, it establishes a self-sustaining flow of the chain which rises up into an arch as if being sucked by an invisible siphon.