Erwin Schrödinger (German pronunciation: [ˈɛrviːn ˈʃrøːdɪŋɐ]; August 12, 1887 – January 4, 1961) was an Austrian - Irish physicist who achieved fame for his contributions to quantum mechanics. In 1935, after correspondence with Albert Einstein, he proposed the Schrödinger's cat thought experiment. In 1933, Schrödinger was awarded the Nobel Prize in Physics, along with physicist Paul Dirac for "the discovery of new productive forms of atomic theory" in regard to the Schrödinger equation which he proposed in 1926. One of Schrödinger's lesser-known areas of scientific contribution was his study of color, color perception, and the field of colorimetry