Abstract
An expression is given for the potential differences set up in colloidal suspensions of solid particles by the passage of sound waves which is correct to the first power of the zeta potential of the particles. The question was examined in detail by Enderby in 1951. For a certain range of values of relevant parameters it was found necessary to introduce the simplification that the mobilities of the various ionic species in the electrolyte surrounding the colloidal particles were identical. In the present paper it is shown how the potential may be calculated quite generally without this restriction by the use of vector methods
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