Basic reproduction number for a population with an exponential age distribution
Shear stress (acting on the bed of a channel)
Polarization angle (Brewster's angle)
Reflectance for unpolarised incident light
Speed of Sound in Fluids (Newton-Laplace equation )
Electric Motor's efficiency
Work
Equidiagonal quadrilateral (Area)
Double-angle's cosine (related to the tangent)
Von Mises yield criterion