Plaster bust of theoretical physicist Albert Einstein mounted on a wood pedestal base, with an incised signature within the plaster. The entire piece measures 15 inches by 8 inches. From the collection of actress LeGrand Mellon (1937-2005), an American performer whose career spans film, television, and theater. In addition to her acting career, Mellon had been involved in creative and cultural work connected to Haiti, launching micro-businesses and continuing the work of her late first husband, William Larimer Mellon III, with HÃ pital Albert Schweitzer. In very good condition. Albert Einstein developed the general theory of relativity, one of the two pillars of modern physics (alongside quantum mechanics). Einstein's work is also known for its influence on the philosophy of science. Einstein is best known in popular culture for his massâ"energy equivalence formula E = mc2 (which has been dubbed "the world's most famous equation"). He received the 1921 Nobel Prize in Physics for his "services to theoretical physics", in particular his discovery of the law of the photoelectric effect, a pivotal step in the evolution of quantum theory (David Bodanis).