The term "Karl Weissenberg" can refer to a couple of different contexts, one of which is a notable scientist in the field of rheology. Karl Weissenberg (1912–2007) was an Austrian-born scientist known for his work in the study of polymer fluids and the viscoelastic properties of materials. He is especially famous for the Weissenberg number, a dimensionless number used in fluid mechanics to characterize the relative effects of elasticity and viscosity in a material.
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