Experimental Soft Condensed Matter Group Harvard University, Prof. D. A. Weitz Cool Picture of the Moment

2 D PIV - Flowfield around a 150 micron glass bead ~100 microns within a RCP glass bead pack. Tracer beads d = 1 micron, framerate: 36 fps, flowrate: 20 microliter/second. Captured with a V 7.3 fast camera combined at a Yokogawa Spinning Disc Confocal at a frame rate of 36 fps.
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Past cool pictures...