Some articles on grains, grain, carbon grains:
... dielectric constant prevents the formation of potential barriers between the crystal grains, leading to a low resistance ... the dielectric constant drops sufficiently to allow the formation of potential barriers at the grain boundaries, and the resistance increases sharply ... This consists of a slice of plastic with carbon grains embedded in it ...
Famous quotes containing the word grains:
“Mix salt and sand, and it shall puzzle the wisest of men, with his mere natural appliances, to separate all the grains of sand from all the grains of salt; but a shower of rain will effect the same object in ten minutes.”
—Thomas Henry Huxley (182595)