Schauberger
In opposition to this dualistic formative, levitative and life-affirming force, however, there is a counterforce, which comes into being in a similar manner. It is also a biotechnically producable current, but functions in a life-negating way and can thus be described as the 'death-current', since, with the exception of developmentally harmful bacterial life-forms, it slowly but surely destroys all life. It breaks down and decomposes every organism so that under very specific pre-conditions and with the aid of a very peculiar movement it can ur-generate new life or death forces of increased and intensified power from the product.

[6] In regard to fig. 22, while the diagrams depict a submarine, theoretically the same process should also apply to a similarly shaped aircraft. — Ed.
[6.1] Editor's Note: The original Keely Motor has two descending pistons. [The Energy Evolution - Harnessing Free Energy from Nature, The Life-Current in Air and Water]