Erwin Schrodinger was an Austrian theoretical physicist who achieved fame for his contributions to quantum mechanics. The philosophical issues raised by his 1935 “Schrodinger's cat” thought experiment perhaps remain his best known legacy, but the Schrödinger equation, which he formulated in 1926 to describe the quantum state of a system, is his most enduring achievement at a more technical level. It is celebrated as one of the most important achievements in 20th Century physics, and it revolutionized quantum mechanics and earned Schrödinger a share in the 1933 Nobel Prize in Physics.