Erwin Schrödinger
Erwin Schrödinger
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Erwin Schrödinger

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Erwin Schrödinger

Erwin Rudolf Josef Alexander Schrödinger (/ˈʃrdɪŋər/ SHROH-ding-er, German: [ˈʃʁøːdɪŋɐ] ; 12 August 1887 – 4 January 1961), sometimes written as Schroedinger or Schrodinger, was an Austrian–Irish theoretical physicist who developed fundamental results in quantum theory. In particular, he is recognized for devising the Schrödinger equation, an equation that provides a way to calculate the wave function of a system and how it changes dynamically in time. He coined the term "quantum entanglement" in 1935.

In addition, Schrödinger wrote many works on various aspects of physics: statistical mechanics and thermodynamics, physics of dielectrics, color theory, electrodynamics, general relativity, and cosmology, and he made several attempts to construct a unified field theory. In his book, What Is Life?, Schrödinger addressed the problems of genetics, looking at the phenomenon of life from the point of view of physics. He also paid great attention to the philosophical aspects of science, ancient, and oriental philosophical concepts, ethics, and religion. He also wrote on philosophy and theoretical biology. In popular culture, he is best known for his "Schrödinger's cat" thought experiment.

Spending most of his life as an academic with positions at various universities, Schrödinger, along with Paul Dirac, won the Nobel Prize in Physics in 1933 for his work on quantum mechanics, the same year he left Germany due to his opposition to Nazism. In his personal life, he lived with both his wife and his mistress which may have led to problems causing him to leave his position at Oxford. Subsequently, until 1938, he had a position in Graz, Austria, until the Nazi takeover when he fled, finally finding a long-term arrangement in Dublin, Ireland, where he remained until retirement in 1955, and where he allegedly sexually abused several minors.

Erwin Rudolf Josef Alexander Schrödinger was born on 12 August 1887 in Vienna, the only child of Rudolf Schrödinger, a botanist, and Georgine Emilia Brenda Bauer, the daughter of a chemistry professor at TU Wien. His mother was of half Austrian and half English descent. His father was Catholic and his mother was Lutheran. Although Schrödinger was an atheist, he had strong interests in Eastern religions and pantheism, and used religious symbolism in his works. He believed his scientific work was an approach to divinity in an intellectual sense.

Schrödinger was also able to learn English outside school, as his maternal grandmother was British. From 1906 to 1910, he studied under Franz S. Exner and Friedrich Hasenöhrl at the University of Vienna. He received his Ph.D. under Hasenöhrl in 1910. He also conducted experimental work with Karl Wilhelm Friedrich "Fritz" Kohlrausch. The following year, he became an assistant to Exner, under whom he completed his habilitation (venia legendi) in 1914.

From 1914 to 1918, Schödinger participated in war work as a commissioned officer in the Austrian fortress artillery (Gorizia, Duino, Sistiana, Prosecco, Vienna). In 1920, he became an assistant to Max Wien at the University of Jena, and in September attained the position of ausserordentlicher Professor (associate professor) at the University of Stuttgart. The following year, he became ordentlicher Professor (full professor) at the University of Breslau.

In 1921, Schrödinger moved to the University of Zurich. In 1927, he succeeded Max Planck at the University of Berlin. In 1933, he decided to leave Germany because he strongly disapproved of the Nazis' antisemitism. He became a Fellow of Magdalen College, Oxford. Soon after arriving, he received the Nobel Prize in Physics together with Paul Dirac. His position at Oxford did not work out well; his unconventional domestic arrangements, sharing living quarters with two women, were not met with acceptance. In 1934, he lectured at Princeton University; he was offered a permanent position there, but did not accept it. Again, his wish to set up house with his wife and his mistress may have created a problem. He had the prospect of a position at the University of Edinburgh, but visa delays occurred, and in the end he took up a position at the University of Graz in 1936. He had also accepted the offer of chair position at the Department of Physics at Allahabad University in India.

In the midst of these tenure issues in 1935, after extensive correspondence with Albert Einstein, Schrödinger proposed what is now called the "Schrödinger's cat" thought experiment.

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