What appeared to the earlier physicists to be the constant quantity of heat is nothing more than the whole motive power of the motion of heat, which remains constant so long as it is not transformed into other forms of work, or results afresh from them.
-- 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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