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  1. Not “surface tension,” since it also works with an air-jet in air, or with water when totally submerged in a big tank.

    Coanda Effect is when fluid jets are deflected by a curved surface. (Note the deflection of the water.) If the momentum of the jet is changed, there must be an opposite force on the curved surface.

  2. I enjoy doing something similar with a pair of spoons. The water pulls them together until they clack, which blocks the steam and allows them to pull apart, then the water pulls them together again. The result is a very satisfying ratchet sound as they clack together repeatedly.

  3. It is no Coanda effect
    Nor is it surface tension
    It is something called magic and it happens by the will of our father the allmighty god and his son jesus

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