Unit GP
Name gigapoise
Category Dynamic Viscosity
Details In the field of rheology, which is the study of flow and deformation of materials, dynamic viscosity is a fundamental property that describes a material's resistance to flow or its internal resistance to deformation. It is a measure of the force required to move a fluid or a layer over another at a certain velocity.

Unit Giga Poise (GP) is used to represent dynamic viscosity at a large scale. It is a non-SI unit and is derived from the CGS (centimeter-gram-second) system of measurement. The term "poise" is named after the French physicist Jean Louis Marie Poiseuille, who researched fluid behavior and viscosity.

A gigapoise (GP) is equal to 1,000,000,000 (10^9) poise. A poise (P) is defined as the dynamic viscosity of a fluid in which a tangential force of one dyne is exerted on a surface of one square centimeter to slide a layer of fluid with a thickness of one centimeter and a velocity of one centimeter per second. In terms of SI units, 1 poise (P) is equivalent to 0.1 pascal-second (Pa·s).

Gigapoise (GP) is usually used to represent extremely high-viscosity fluids or substances, such as the flow of magma, polymers or thick oils. However, dynamic viscosity is commonly expressed in smaller units like centipoise (cP) or millipoise (mP) for most fluids and gases in typical industrial, scientific, or everyday applications.