Elasticity is the property of an object to resume its normal shape after being deformed by a force. Stress is defined as the restoring force per unit area, while strain is the change in dimension per original unit of measurement. Tensile or longitudinal strain occurs when the strain is in the direction of the applied force. Bulk or volume strain is the fractional change in volume due to pressure changes, and shear strain is the ratio of lateral displacement to layer height. Young's modulus is the ratio of tensile stress to tensile strain and describes elasticity. Bulk modulus is similarly the ratio of bulk stress to bulk strain. Shear modulus is the ratio of shear stress to shear strain. Various experiments and equations are described to calculate