👉 Beccari's theorem, named after Girolamo Beccaria, is a fundamental result in the theory of elasticity and elasticity theory, which deals with the behavior of materials under stress. It states that for an elastic material subjected to a constant strain rate, its ultimate tensile strength (E) will be given by: \[ E = \frac{2}{3} k \cdot \sigma^2 \] where \(k\) is the Young's modulus and \(σ\) is the