From the MIT webpage:
"The whorls and swirls of color may look like something by art nouveau painter Gustav Klimt, but the winning images from MIT's annual 8.02 "Weird Fields" contest are really computer-generated visualizations of vector fields.
To help students understand electromagnetic force fields, Professor of Physics John Belcher and colleagues at the MIT Center for Educational Computer Initiatives developed a computer applet into which students put the mathematical expressions that describe a given field. "It then pops out a visual representation of what the field looks like," he said."
