But heat can also be produced by the friction of liquids, in which there could be no question of changes in structure, or of the liberation of latent heat.
-- Hermann von Helmholtz
   
Hermann von Helmholtz   Name:
Hermann von Helmholtz
Type:
Physicist
Nationality:
German
Birth:
August 31, 1821
Death:
September 8, 1894
https://www.nutquote.com/quote/Hermann_von_Helmholtz