Erwin Rudolf Josef Alexander Schrödinger (12 August 1887 – 4 January 1961), sometimes anglicised as Schroedinger or Schrodinger, was an Austrian 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 Erwin Rudolf Josef Alexander Schrödinger (12 August 1887 – 4 January 1961), sometimes anglicised as Schroedinger or Schrodinger, was an Austrian 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… In 1956, following the neutralization of Austria in 1955, Schrödinger returned to Vienna to become a professor emeritus at the University of Vienna. At an important lecture during the World Power Conference, Schrödinger refused to speak on nuclear power because of his scepticism about it and gave a philosophical lecture instead. During this period, he turned from mainstream quantum mechanics' definition of wave–particle duality and promoted the wave idea alone, causing much controversy. Schrödinger suffered from tuberculosis and several times in the 1920s stayed at a sanatorium in Arosa, Switzerland. It was there that he formulated his wave equation. Schrödinger died of tuberculosis on 4 January 1961 in Vienna at the age of 73. Although not Catholic, he was buried in a Catholic cemetery in Alpbach, after the priest in charge of the cemetery learnt Schrödinger was a Member of the Pontifical Academy of Sciences. There… The philosophical issues raised by Schrödinger's cat are still debated today and remain his most enduring legacy in popular science, while Schrödinger's equation is his most enduring legacy at a more technical level. Schrödinger is one of several individuals who have been called "the father of quantum mechanics". Schrödinger crater, on the far side of the Moon, is named after him. The Erwin Schrödinger International Institute for Mathematical Physics was founded in Vienna in 1992. Schrödinger's portrait was the main feature of the design of the 1983–97 Austrian 1000-schilling banknote, the second-highest denomination. A building is named after him at the University of Limerick in Ireland, as is the Erwin Schrödinger Zentrum in Adlershof, Berlin and the Route Schrödinger at CERN, Prévessin, France. Schrödinger's 126th birthday anniversary in 2013 was celebrated with a Google Doodle.