A dynamic line integral convolution movie of the magnetic field as a function of time when the spin-up takes place over a time relatively long compared to the speed of light transit time across the sphere. This is a ramp spin-up over at time lasting 20 a/c, and the length of the clip is about 30 a/c.
Click on the panel or the link below to download and play the movie. This is an .avi format movie about 17 Meg in size.
