For 10 points, name these objects that form and implode via cavitation and can form from soap films.
The time evolution of the radius of one of these objects can be approximated with less than one percent error by the expression "one minus t squared raised to the two-fifths power". The Keller-Miksis equation models these objects, which have a natural frequency proportional to the square root of the adiabatic index times pressure divided by density, a value called the Minnaert resonance. Bjerknes forces contribute to the emission of light from these objects when they are forced to oscillate by standing acoustic waves in a phenomenon known as sonoluminescence. These objects are described by the Rayleigh-Plesset equation, which is derived from the Navier-Stokes equations under spherical symmetry. For 10 points, name these objects that form and implode via cavitation and can form from soap films.
The time evolution of the radius of one of these objects can be approximated with less than one percent error by the expression "one minus t squared raised to the two-fifths power".
bubbles [or liquid bubbles; or soap bubbles]