One of many positive aspects of living in downtown San Francisco is that it is a dynamic and breathing street art gallery, as aptly demonstrated by one of my favorite blogs … the picture below is from a nearby alley, whose porticos are covered in fantastic street art.

Pine Trees on Heron Alley, SF

Fluid dynamics and surface tension — when their powers combine, amazing physical effects result. Markus Reugels has made capturing the intricate patterns of crashing water droplets, combined with dye and lights, an art form with some of the most spectacular imagery I have ever seen.  A taste below …