Chain fountain

{{Short description|Physical phenomenon}}

{{Short description|Physical phenomenon}}

[[File:Kettenfontäne d.jpg|thumb|Snapshot of chain fountain process]]

[[File:Kettenfontäne d.jpg|thumb|Snapshot of chain fountain process]]

The '''chain fountain''' phenomenon, also known as '''self-siphoning beads''', '''Newton's beads''', or the '''Spangler effect''', is a physical phenomenon observed with a [[chain]] placed inside a [[jar]]. One end of the chain is pulled from the jar and is allowed to fall under the influence of [[gravity]]. This process establishes a self-sustaining flow of the chain which rises over the edge and goes down to the floor or ground beneath it, as if being sucked out of the jar by an invisible [[siphon]]. For chains with small adjacent [[beads]], the arc can ascend into the air over and above the edge of the jar with a noticeable gap; this gap is greater when the chain falls farther.{{cite magazine |title=Gravity-Defying, Self-Siphoning Metal Beads Explained [Video] |url=https://blogs.scientificamerican.com/observations/2013/07/03/gravity-defying-self-siphoning-metal-beads-explained-video/ |magazine=Scientific American |first=Philip |last=Yam |date=2013-07-03 }}

The '''chain fountain''' phenomenon, also known as '''self-siphoning beads''', '''Newton's beads''', or the '''Mould effect''', is a physical phenomenon observed with a [[chain]] placed inside a [[jar]]. One end of the chain is pulled from the jar and is allowed to fall under the influence of [[gravity]]. This process establishes a self-sustaining flow of the chain which rises over the edge and goes down to the floor or ground beneath it, as if being sucked out of the jar by an invisible [[siphon]]. For chains with small adjacent [[beads]], the arc can ascend into the air over and above the edge of the jar with a noticeable gap; this gap is greater when the chain falls farther.{{cite magazine |title=Gravity-Defying, Self-Siphoning Metal Beads Explained [Video] |url=https://blogs.scientificamerican.com/observations/2013/07/03/gravity-defying-self-siphoning-metal-beads-explained-video/ |magazine=Scientific American |first=Philip |last=Yam |date=2013-07-03 }}

The '''self-siphoning effect''' is also observed in [[Non-Newtonian fluid|non-Newtonian fluids]].

The '''self-siphoning effect''' is also observed in [[Non-Newtonian fluid|non-Newtonian fluids]].