Now this is pretty awesome. Watch the patterns in the fog behind that building (viewed from the John Hancock Center, Chicago). You can make out a swirling, alternating vortex pattern. The fog is defining a Von Karman vortex pattern.
Now this is pretty awesome. Watch the patterns in the fog behind that building (viewed from the John Hancock Center, Chicago). You can make out a swirling, alternating vortex pattern. The fog is defining a Von Karman vortex pattern.
