"Windmills, which are used in the great plains of Holland and North Germany to supply the want of falling water, afford another instance of the action of velocity. The sails are driven by air in motion - by wind."

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Source : Hermann von Helmholtz, David Cahan (1995). “Science and Culture: Popular and Philosophical Essays”, p.106, University of Chicago Press

Hermann von Helmholtz

#Fall Quotes #Air Quotes #Wind Quotes