Adolf Eugen Fick
(1829-1901) was a German
physiologist and inventor. He is best known for his 1887 invention of the contact lens. In 1855 he introduced Fick's law of diffusion
, which governs the diffusion of a gas
across a fluid membrane. In 1870 he was the first to devise a technique for measuring cardiac output
, called the Fick Principle.
Interestingly, Fick managed to double-publish his law of diffusion, as it applied equally to physiology and physics.