Abstract
AbstractIt is shown that the forward scattering of light, X‐rays and neutrons conceptually relates to osmotic pressure and ultracentrifugation, allowing the correct determination of molecular masses, hydration and solvent interactions in multicomponent and polyelectrolyte systems. Combination of neutron scattering length and mass density increments in contrast variation experiments is shown to be particularly useful for the calculation of interaction parameters and partial specific volumes. Whereas static size, shape and other parameters may be derived from the angular dependence of the intensities of scattering, quasi‐elastic laser light scattering yields dynamic information about motion and internal dynamics of biological macromolecules. —Application to nucleic acids and to proteins from extremely halophilic enzymes is briefly indicated.
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