Poisson's Ratio is a measure of the deformation in the transverse direction when an object is stretched or compressed in the longitudinal direction. It is a dimensionless constant that provides insight into the material's elasticity and is crucial in understanding how materials respond to mechanical stress.

Poisson's Ratio

Measure of deformation

transverse direction

longitudinal direction

dimensionless constant

material's elasticity

Mechanical stress is the internal force per unit area within materials that arises from externally applied forces, temperature changes, or deformation. It is a critical factor in engineering and materials science, as it determines the strength, ductility, and failure characteristics of materials under load.

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