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The Fermi-Pasta-Ulam-Tsingou experiment, often shortened to FPU experiment, was a computational study of a one-dimensional lattice of nonlinear oscillators. The experiment was conducted in 1953 by Enrico Fermi, John Pasta, Stanislaw Ulam, and Mary Tsingou. The FPU experiment was one of the first computer simulations of a nonlinear physical system, and it helped to lay the foundation for the field of computational physics.