(physics) A nonlinear partial differential equation that describes the capillary pressure difference sustained across the interface between two static fluids, such as water and air, due to the phenomenon of surface tension or wall tension.

a method used to estimate the parameters of a generalized linear model with a possible unknown correlation between outcomes

(chemistry) An ionic equation in which spectator ions are omitted, i.e. only the reacting ions are included in the equation.

plural of net ionic equation

(fluid dynamics) A physical law that gives the pressure drop in an incompressible Newtonian fluid in laminar flow flowing through a long cylindrical pipe of constant cross section.

Synonym of Pell's equation

plural of Pell-Fermat equation

the equation ̂H𝜓(⃑r)=E𝜓(⃑r), for some constant E; applies to separable solutions 𝛹(⃑r,t)=𝜓(⃑r)𝜙(t) to the Schrödinger equation