Erwin Rudolf Josef Alexander Schrodinger (August 12, 1887 - January 4, 1961) was an Austrian physicist and theoretical biologist who was one of the fathers of quantum mechanics, and is famed for a number of important contributions to physics, especially the Schrodinger equation, for which he received the Nobel Prize in Physics in 1933. In 1935, after extensive correspondence with personal friend Albert Einstein, he proposed the Schrodinger's cat thought experiment. The philosophical issues raised by Schrodinger's cat are still debated today and remains his most enduring legacy in popular science, while Schrodinger's equation is his most enduring legacy at a more technical level. He died in 1961 of tuberculosis at the age of 73. The huge crater Schrodinger, on the far side of the Moon is named after him. The Erwin Schrodinger International Institute for Mathematical Physics was established in Vienna in 1993.