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The scientist states that pressure is exerted outwards in all directions equally, whereas natural pressure (e.g. air pressure) is exerted inwards from all directions equally.

Viktor Schauberger, Callum Coats (2000). “The Energy Evolution – Harnessing Free Energy from Nature: Volume 4 of Renowned Environmentalist Viktor Schauberger’s Eco-Technology Series”, p.21, Gill & Macmillan Ltd
The scientist states that pressure is exerted outwards in all directions equally, whereas natural pressure (e.g. air pressure) is exerted inwards from all directions equally.