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The object of generalized hydrodynamics is to extend from the macroscopic scale to the microscopic scale the domain in which ordinary hydrodynamics applies. With this extension, under well-defined conditions, we will then, among other things, be able to predict the momentum with which neutrons are scattered at various angles by the fluid; neutron scattering is one of the principal methods by which the dynamic structure of fluids is investigated experimentally.
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Alder et al. (1984) studied this question.
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