Equations of physics

classical formulation of Mechanics by Isaac Newton

physical law relating mass to energy

statement of conservation of energy as it applies specifically to a thermodynamic system or process

law of physics stating that systems spontaneously evolve towards states of higher entropy

second-order linear differential equation important in physics

function whose integral over a region describes the probability of an event occurring in that region

field equations in general relativity

equation describing the state of matter under a given set of physical conditions

mathematical space setting which eases explanation of special relativity

differential equation that describes the motion of a physical system

relativistic wave equation in quantum mechanics

function in thermodynamics and statistical physics

Green's functions

physical law

relation of wavelength/wavenumber as a function of a wave's frequency

set of systems under identical condition

partial differential equation used in physics

formula that describes the transition rate from one energy eigenstate of a quantum system into other energy eigenstates

equality of certain ratios between flows and forces in thermodynamic systems out of equilibrium

combination of the diffusion and convection (advection) equations

relation between two physical quantities that is specific to a material or substance

extend Newton's laws of motion to rigid bodies

equations governing time evolution of physical systems

one-electron Schrödinger equation of a fictitious system

equation for two-body bound states

nonlinear hyperbolic partial differential equation in 1 + 1 dimensions

consistency equation which was first introduced in the field of statistical mechanics

classical Lagrangian describing the interaction to order v²/c² between two charged particles in vacuo

integral approximation method popular in condensed matter physics

first order nonlinear ordinary differential equation

relationship of a signal transducer

field theory of a point particle confined to move on a fixed manifold

relates the hold-force to the load-force if a flexible line is wound around a cylinder