Reyn

enUK

Rain or rein.

reyn

enUK

reyn

[ren] (fluid mechanics) A unit of dynamic viscosity equal to the dynamic viscosity of a fluid in which there is a tangential force of 1 poundal per square foot resisting the flow of two parallel fluid layers past each other when their differential velocity is 1 foot per second per foot of separation; equal to approximately 14.8816 poise.

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