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1. Viscosity definitions and units
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Dynamic or shear viscosity is based on fluid mechanics concepts.
Consider two parallel horizontal plates (figure 1 ), which bound a fluid layer of thickness h. If the lower plate is stationary and the upper plate of area A moves parallel to this surface at a velocity v x , a force F per unit area A must be applied to maintain the displacement such that :
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Viscosity definitions and units
Viscosity measurement devices
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