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Postwar in United States (1946–48)

In 1946, Dalí worked with Walt Disney and animator John Hench on an unfinished animated film Destino.

Dalí exhibited new work at the Bignou Gallery from November 1947 to January 1948. The 14 oil paintings and other works in the exhibition reflected Dalí's increasing interest in atomic physics. Notable works included Dematerialization Near the Nose of Nero (The Separation of the Atom), Intra-Atomic Equilibrium of a Swan's Feather, and a study for Leda Atomica. The proportions of the latter work were worked out in collaboration with a mathematician.

In early 1948, Dalí's 50 Secrets of Magic Craftsmanship was published. The book was a mixture of anecdotes, practical advice on painting, and Dalínian polemics.