The so called "sogwendel" by viktor schauberger reconstruced by felix hedinger is a vortex like construction in the shape of a shell that is able to pump and energize water
The Amazing Discoveries of Viktor Schauberger - The Water Wizard 2 DVD-ROMs
Channelling God From Within: Viktor Schauberger- Nature Was My Teacher
Viktor Schauberger (1885-1958)
QUANTUM NUMEROLOGY AND VORTICULAR PHYSICS, NAZI STYLE
Viktor Schauberger naturalist, philosopher, inventor and Biomimicry experimenter.
Sacred Living Geometry part 1 - Theories of Viktor Schauberger