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Elasticity (physics)

physical property; ability of a body to resist a distorting influence or deforming force and to return to its original size and shape when that influence or force is removed

Something that is elastic can be stretched or deformed (changed) and returned to its original form, like a rubber band. It tries to come back to its first shape. The stress is the force applied; the strain is how much the shape is changed, and the elastic modulus is the ratio between those numbers.


A rubber band is elastic, and can be streched
Economic elasticity is at elasticity (economics)

This idea was first suggested[1] by Robert Hooke in 1675.