Erwin Schrodinger (1887-1961), an Austrian theoretical physicist, published (1926) four papers that laid the foundation of the wave-mechanics approach to quantum theory and set forth his now-famous wave equation. In 1933 he shared the Nobel Prize for physics with Paul DIRAC for his contributions to atomic theory. He also worked on problems of general relativity and cosmology and on a unified field theory. Late in his life Schrodinger studied the foundations of physics and their implications for philosophy.