Livermore physicist Berni Alder's pioneering computer simulation work was published in Physics Review in 1962. Berni Alder did pioneering work in the 1950s using computers that could describe only 100 molecular collisions per hour. Alder's seminal simulations in the early 1960s on Lawrence Livermore's LARC (Livermore Advanced Research Computer, the supercomputer of its day).
In the 1950s Berni Alder and Tom Wainwright at Lawrence Livermore National Laboratory studied the distribution of molecules in a liquid, using a model in which the molecules are represented as hard spheres, which interact like billiard balls. Using the fastest computer at that time, and IBM 704, they were able to simulate the motions of 32 and 108 molecules in computations requiring 10 to 30 hours. Berni Alder, also collaborator with Hildebrand since the 1950s.
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