Thomas Dale Stewart (August 14, 1890 – February 6, 1958) was an American chemist. He was born at

Sumner, Washington Sumner is a city in northern Pierce County, Washington, United States. The population was 10,621 at the 2020 census. Nearby cities include Puyallup to the west, Auburn to the north, and Bonney Lake to the east. History Sumner was founde ...

, and received his

Ph.D. A Doctor of Philosophy (PhD, DPhil; or ) is a terminal degree that usually denotes the highest level of academic achievement in a given discipline and is awarded following a course of graduate study and original research. The name of the deg ...

degree in chemistry from

University of California at Berkeley The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California), is a public land-grant research university in Berkeley, California, United States. Founded in 1868 and named after the Anglo-Irish philosopher George Berkele ...

in 1916. After one year of research at

University of Chicago The University of Chicago (UChicago, Chicago, or UChi) is a Private university, private research university in Chicago, Illinois, United States. Its main campus is in the Hyde Park, Chicago, Hyde Park neighborhood on Chicago's South Side, Chic ...

under

Julius Stieglitz Julius Oscar Stieglitz (May 26, 1867 – January 10, 1937) was an American chemist of German Jewish origin. He was a teacher and organic chemist with a major interest in pharmaceutical and medicinal chemistry. He is known for the Stieglitz rear ...

, he returned to Berkeley as an instructor in the chemistry department, and became a professor there in 1935. His early research was about the mechanism of electron conduction in metals. The collaborative work with

Richard C. Tolman Richard Chace Tolman (March 4, 1881 – September 5, 1948) was an American mathematical physicist and physical chemist who made many contributions to statistical mechanics and theoretical cosmology. He was a professor at the California Ins ...

led to the discovery of

Stewart–Tolman effect The Stewart–Tolman effect is a phenomenon in electrodynamics caused by the finite mass of electrons in conducting metal, or, more generally, the finite mass of charge carriers in an electrical conductor. It is named after T. Dale Stewart and Ric ...

. Later he worked on acid-base equilibria of organic nitrogen compounds, as well as

reaction kinetics Chemical kinetics, also known as reaction kinetics, is the branch of physical chemistry that is concerned with understanding the rates of chemical reactions. It is different from chemical thermodynamics, which deals with the direction in which a ...

References

Thomas Dale Stewart, University of California: In Memoriam, 1959
accessed 06-21-2007. {{DEFAULTSORT:Stewart, Thomas Dale 20th-century American physicists 1890 births 1958 deaths People from Sumner, Washington University of California, Berkeley alumni UC Berkeley College of Chemistry faculty