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.
-- Hermann von Helmholtz
   
Hermann von Helmholtz   Name:
Hermann von Helmholtz
Type:
Physicist
Nationality:
German
Birth:
August 31, 1821
Death:
September 8, 1894
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