Recently a friend of mine received a project from her college which was like - "Bring a bubble which isn't spherical in class. ". Could anyone please suggest how to prepare such a bubble sufficiently big and which can sustain enough. So that she could bring in class. I confirmed that a soap film(like a cylinder) could also do.
Please help me in suggesting a method and the liquid we should use to develop this bubble

  • 1
    $\begingroup$ A lava lamp might do... $\endgroup$
    – Jon Custer
    Sep 6, 2016 at 17:21
  • 1
    $\begingroup$ Is it invalid to merely sustain a bubble between two bubble wands? $\endgroup$ Sep 7, 2016 at 3:29
  • 2
    $\begingroup$ How do you define bubble? $\endgroup$ Sep 7, 2016 at 14:13

1 Answer 1


Surface tension will relax most or all bubbles into a spherical shape around internal pressure. So, one solution is to create a situation where surface tension is nonuniform:a bubble adhering to the wall of a glass. Because the glass is not part of the liquid's surface, that face of the bubble needn't be spherical.

Another is to modulate the pressure the film contains. Two bubbles in collision is the easiest way: if the bubbles are the same internal pressure, they will form a flat wall where they meet. If they do NOT have the same internal pressure, the wall curvature is concave toward the center of the smaller bubble.


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