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Karl Herzfeld
Austrian-American physicist (1892-1978) · United States · On the map · Scientists · Died at 86
Karl Ferdinand Herzfeld was an Austrian-American physicist and chemist. He worked on condensed matter physics, fluid dynamics, and statistical mechanics. In 1927, he was the first to quantify when a substance is a metal or an insulator. The Goldhammer-Herzfeld criterion to classify metalloids is named after him.
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With Frank O. Rice, he studied the rate equations of the pyrolysis of acetaldehyde in 1934. Their model is known as the Rice-Herzfeld mechanism.
