Viktor Schauberger saw life’s many processes as a part of an indivisible whole—linked by spiral movement. He identified two forms of motion in Nature:
Inwardly spiraling (used to build up, to create, and to energize).
Outwardly expanding (used by Nature to encourage breakdown and decomposition) and
The phenomenon that is shown in the image of Guadalupe Island in this top image (acquired on August 20, 1999) features a ubiquitous occurrence in the motion of fluids—a vortex street, which is a linear chain of spiral eddies called von Karman vortices. Von Karman vortices are named after Theodore von Karmen, who first described the phenomenon in the atmosphere. Dr. von Karman was a co-founder of NASA's Jet Propulsion Laboarator.
von Karman vortices form nearly everywhere that fluid flow is disturbed by an object. In the cloud images shown on this page, the "object" that is disturbing the fluid flow is an island or group of islands. As a prevailing wind encounters the island, the disturbance in the flow propagates downstream of the island in the form of a double row of vortices which alternate their direction of rotation. The animation below (courtesy of Cesareo de la Rosa Siqueira at the University of Sao Paulo, Brazil) shows how a von Karman vortex street develops behind a cylinder moving through a fluid.
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