Born in Austria in 1887, Erwin Schrödinger was one of the leading physicists of the early 20th century, a period marked by the development of quantum theory. He formulated the fundamental equation of quantum mechanics, known as Schrödinger Equation, which describes the “wave function” of particles. For this work he received the Physics’ Nobel Prize in 1933. Later, Schrödinger became a loud critic of the probabilistic interpretation of quantum mechanics, and suggested the thought experiment known as “Schrödinger’s cat”. During World War II he immigrated to Ireland, where he wrote his 1944 book “What is Life?”. Schrödinger died of tuberculosis in 1961.