Lars Onsager (November 27, 1903 – October 5, 1976) was a Norwegian-born American physical chemist and theoretical physicist.
After completing secondary school in Oslo, he attended the Norwegian Institute of Technology (NTH) in Trondheim, graduating as a chemical engineer in 1925. ==Career and research== In 1925 he arrived at a correction to the Debye-Hückel theory of electrolytic solutions, to specify Brownian movement of ions in solution, and during 1926 published it.
After completing secondary school in Oslo, he attended the Norwegian Institute of Technology (NTH) in Trondheim, graduating as a chemical engineer in 1925. ==Career and research== In 1925 he arrived at a correction to the Debye-Hückel theory of electrolytic solutions, to specify Brownian movement of ions in solution, and during 1926 published it.
He impressed Debye so much that he was invited to become Debye's assistant at the Eidgenössische Technische Hochschule (ETH), where he remained until 1928. ===Johns Hopkins University=== Eventually in 1928 he went to the United States to take a faculty position at the Johns Hopkins University in Baltimore, Maryland.
He was also unable to direct the research of graduate students, except for the occasional outstanding one. During the late 1930s, Onsager researched the dipole theory of dielectrics, making improvements for another topic that had been studied by Peter Debye.
In 1933, just before taking up the position at Yale, Onsager traveled to Austria to visit electrochemist Hans Falkenhagen.
They were married on September 7, 1933, and had three sons and a daughter. ===Yale University=== At Yale, an embarrassing situation occurred: he had been hired as a postdoctoral fellow, but it was discovered that he had never received a Ph.D.
Even before the dissertation was finished, he was appointed assistant professor in 1934, and promoted to associate professor in 1940.
in chemistry in 1935.
However, when he submitted his paper to a journal that Debye edited in 1936, it was rejected.
Even before the dissertation was finished, he was appointed assistant professor in 1934, and promoted to associate professor in 1940.
During the 1940s, Onsager studied the statistical-mechanical theory of phase transitions in solids, deriving a mathematically elegant theory which was enthusiastically received.
In what is widely considered a tour de force of mathematical physics, he obtained the exact solution for the two dimensional Ising model in zero field in 1944. In 1960 he was awarded an [degree], doctor techn.
honoris causa, at the Norwegian Institute of Technology, later part of Norwegian University of Science and Technology. In 1945, Onsager was naturalized as an American citizen, and the same year he was awarded the title of J.
In what is widely considered a tour de force of mathematical physics, he obtained the exact solution for the two dimensional Ising model in zero field in 1944. In 1960 he was awarded an [degree], doctor techn.
He was awarded the Nobel Prize in Chemistry in 1968. ==Education and early life == Lars Onsager was born in Kristiania (now Oslo), Norway.
However, their value became apparent during the decades following World War II, and by 1968 they were considered important enough to gain Onsager that year's Nobel Prize in Chemistry.
Lars Onsager (November 27, 1903 – October 5, 1976) was a Norwegian-born American physical chemist and theoretical physicist.
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