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Verlet integration is a method for calculating the trajectories of particles in molecular dynamics simulations. The verlet integrator offers greater stability than the much simpler Euler integration methods, as well as other properties that are important in physical systems such as time-reversibility and area preserving properties. Stability of the technique depends fairly heavily upon either a uniform update rate, or the ability to accurately identify positions at a small time delta into the past. The method was developed by French physicist Loup Verlet in 1967.