Huber's equation
Huber's equation, first derived by a Polish engineer Tytus Maksymilian Huber, is a basic formula in elastic material tension calculations, an equivalent of the equation of state, but applying to solids. In most simple expression and commonly in use it looks like this: formula_1 where formula_2 is the tensile stress, and formula_3 is the shear stress, measured in newtons per square meter (N/m, also called pascals, Pa), while formula_4—called a reduced tension—is the resultant tension of the material. Finds application in calculating the span width of the bridges, their beam cross-sections, etc