UChicago physicists achieve breakthrough in vortex dynamics with 3D printing and red Sharpie

A team of physicists from the University of Chicago recently achieved a breakthrough in the field of experimental vortex dynamics. Using 3D printed hydrofoils to create thin-core vortices, and with the lucky help of a red Sharpie marker, the team was able to capture measurements of total helicity, a fundamental property of fluid flow, for the first time.

from 3ders.org - http://www.3ders.org