After World War II, Onsager researched new topics of interest. He came up with a theoretical explanation of the superfluid properties of liquid helium in 1949. Two years later the physicist Richard Feynman independently proposed the same theory. He also worked on the theories of liquid crystals and the electrical properties of ice. While on a Fulbright scholarship to the University of Cambridge, he worked on the magnetic properties of metals. He developed important ideas on the quantization of magnetic flux in metals. He was awarded the Lorentz Medal in 1958, Willard Gibbs Award in 1962, and the Nobel Prize in Chemistry in 1968. He was elected a Foreign Member of the Royal Society (ForMemRS) in 1975.