Rheology

Rheology is the study of the deformation and flow of matter. The term rheology was coined by Eugene Bingham, a professor at Lehigh University, in 1920, from a suggestion by [Markus Reiner]?, inspired by the Heraclitus' famous expression "panta rhei": everything flows.

Basic rheological terms are:

• Viscosity?
• [Shear Rate]? and [Elongation Rate]?
• [Shear Stress]?
• [Newtonian Law]?

Fluids can be categorized in

• [newtonian fluids]? (the fluid viscosity is constant) and
• [non-newtonian fluids]? (the fluid viscosity depends on the stresses acting on the fluid) which can by subclassified into
  • generalized non-newtonian fluids (also called purely viscous fluids) and
  • [viscoelastic fluids]?.

Rheological properties are determined by means of rheometry?.