Erwin Schrödinger (1887-1961) was an Austrian physicist who developed a number of fundamental results in the field of quantum theory, which formed the basis of wave mechanics.
Erwin Schrödinger formulated the wave equation (stationary and time-dependent Schrödinger equation) and revealed the identity of his development of the formalism and matrix mechanics.
Schrödinger proposed an original interpretation of the physical meaning of the wave function and in subsequent years repeatedly criticized the conventional Copenhagen interpretation of quantum mechanics (using e.g. the paradox of Schrödinger's cat).