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In physics, a fluid is a liquid, gas, or other material that may continuously move and deform (flow) under an applied shear stress, or external force.[1] They have zero shear modulus, or, in simpler terms, are substances which cannot resist any shear force applied to them.[2]
https://en.wikipedia.org/wiki/Fluid
In physics, a fluid is a liquid, gas, or other material that may continuously move and deform (flow) under an applied shear stress, or external force.[1] They have zero shear modulus, or, in simpler terms, are substances which cannot resist any shear force applied to them.[2]