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## Main Question or Discussion Point

Hello,

Wikipedia gave me prior hints as to how the speed of sound depends on viscosity but after searching on Google scholar and Google, I have yet to find any direct equations/findings that give a direct relationship of the speed of sound to the visocisty of fluids and solids outside of: http://iopscience.iop.org/article/10.1088/0370-1301/66/5/303/pdf

My question: does anyone know how the speed of sound depends on the viscosity of liquids and solids? Are there any known formulas?

Wikipedia gave me prior hints as to how the speed of sound depends on viscosity but after searching on Google scholar and Google, I have yet to find any direct equations/findings that give a direct relationship of the speed of sound to the visocisty of fluids and solids outside of: http://iopscience.iop.org/article/10.1088/0370-1301/66/5/303/pdf

My question: does anyone know how the speed of sound depends on the viscosity of liquids and solids? Are there any known formulas?