An illustration of the initial wavefunction for a complicated superfluid vortex tangle (vortex core in light blue). The first part of the movie shows the phase along a plane through the middle of the volume, along with a varying phase isosurface. The second part of the movie shows just the phase isosurfaces.
A high speed video of linked vortices in experiment, showing how the helicity evolves as the vortices unlink (upper right graph).
Although the helicity changes slowly, it is continuous through reconnection events despite the fact that the topology changes dramatically.
This process can be regarded as an efficient conversion of the initial linked state to a coiled structure, indicated in the ‘helistogram’ on the lower right.
A high-speed video of a soap bubble popping, taken at the 2013 University of Chicago Physics with a Bang Open House.
Recorded at 20,000 FPS, played back at 1/1000th real speed.
The bubble is backlit with a narrow-spectrum sodium vapor lamp, resulting in the visible interference fringes.