Scientists say ocean currents cause microbes to filter light

February 24, 2011

By Denise Brehm
Civil & Environmental Engineering

Adding particles to liquids to make currents visible is a common practice in the study of fluid mechanics, one that was adopted and perfected by artist Paul Matisse in sculptures he calls Kalliroscopes. Matisse’s glass-enclosed liquid sculptures contain an object whose movement through the liquid creates whorls that can be seen only because elongated particles trailing the object align with the direction of the current; light reflects off the particles, making the current visible to the viewer.

Researchers at MIT recently demonstrated that this same phenomenon is responsible for the swirl