The Mould effect (also called the chain fountain phenomenon) was discovered by British science presenter Steve Mould.

Quick Scoop

  • The Mould effect is the surprising “fountain” that forms when a long bead chain or rope siphons itself out of a container and arches up into the air before falling down.
  • It is named after Steve Mould, who first noticed and popularized the effect in a viral video, leading researchers to study and formally describe the physics behind it.
  • In scientific papers, the phenomenon is explicitly referred to as the Mould effect and credited to Steve Mould as the discoverer.

In short, if you are asking “who discovered the mould effect?” , the widely accepted answer in current scientific and popular references is Steve Mould.

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