5 Questions
Rheology is the science concerned with the deformation of matter under the influence of stress, which may be applied perpendicularly to the surface of a body or tangentially to the surface of a body.
True
Viscosity is an expression of the resistance of a fluid to flow. The higher the viscosity, the lower the resistance.
False
Elastic deformation is reversible and the work spent for the deformation is recoverable when the body returns to its original position.
True
Plastic deformation is permanent and the work spent for deformation is dissipated as heat.
True
Newtonian liquids follow Newtonian’s law of flow and their viscosity remains constant.
True
Study Notes
Rheology
- Rheology is the science that studies the deformation of matter under stress, which can be applied perpendicularly or tangentially to a body's surface.
Deformation Types
- Elastic deformation: reversible, and the work spent for deformation is recoverable when the body returns to its original position.
- Plastic deformation: permanent, and the work spent for deformation is dissipated as heat.
Viscosity
- Viscosity is an expression of a fluid's resistance to flow.
- Higher viscosity means lower resistance.
- Newtonian liquids: follow Newton's law of flow, and their viscosity remains constant.
Learn about rheology, the science concerned with the deformation of matter under the influence of stress, including tensile and shearing stress. Understand the concept of viscosity and its importance in physical pharmacy.
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