What would happen to the bubbles in a glass of champagne (or similar liquid) if the glass was placed on a turntable and rotated?
Would the bubbles spiral outwards from where they were formed or inwards?
Thanks
I would think that they would migrate inward and upward, due to the champagne being more dense than the gas bubbles.
Hmm, that’s a good question… If you placed a glass of champagne at the ccentre of a turntable and rotated it at high speed, the glass would feel a ficticious force pointing outwards at all points (i.e. centrifugal force) in addition to gravity. So when the bubbles form on the surface of the glass, they’ll move up & inwards against the total “gravity”, since they’re more buoyant than the liquid.
Once the bubbles are rising, they’ll also be deflected by the Coriolis force, which will cause them to turn off of a straight-line path in a direction opposite the rotation of the glass. Beyond that, things get pretty complicated.