momentum density
11Cauchy momentum equation — The Cauchy momentum equation is a vector partial differential equation put forth by Cauchy that describes the non relativistic momentum transport in any continuum: [cite book last = Acheson first = D. J. title = Elementary Fluid Dynamics… …
12Photon polarization — is the quantum mechanical description of the classical polarized sinusoidal plane electromagnetic wave. Individual photons are completely polarized. Their polarization state can be linear or circular, or it can be elliptical, which is anywhere in …
13Theoretical and experimental justification for the Schrödinger equation — The theoretical and experimental justification for the Schrödinger equation motivates the discovery of the Schrödinger equation, the equation that describes the dynamics of nonrelativistic particles. The motivation uses photons, which are… …
14Magnetic monopole — It is impossible to make magnetic monopoles from a bar magnet. If a bar magnet is cut in half, it is not the case that one half has the north pole and the other half has the south pole. Inst …
15Zero-point energy — is the lowest possible energy that a quantum mechanical physical system may have; it is the energy of its ground state. All quantum mechanical systems undergo fluctuations even in their ground state and have an associated zero point energy, a… …
16Spin tensor — In mathematics and mathematical physics, the Euclidean group :SE(d) of direct isometries is generated by translations and rotations. Its Lie algebra is written:mathfrak{se}(d). Noether currentsThe Noether currents for the translations make up the …
17Photon dynamics in the double-slit experiment — The dynamics of photons in the double slit experiment describes the relationship between classical electromagnetic waves and photons, the quantum counterpart of classical electromagnetic waves, in the context of the double slit experiment. The… …
18Electromagnetic stress-energy tensor — In physics, the electromagnetic stress energy tensor is the portion of the stress energy tensor due to the electromagnetic field. Definition In free space in SI units, the electromagnetic stress energy tensor is:T^{mu u} = frac{1}{mu 0} [ F^{mu… …
19Potential flow — streamlines around a NACA 0012 airfoil at 11° angle of attack, with upper and lower streamtubes identified. In fluid dynamics, potential flow describes the velocity field as the gradient of a scalar function: the velocity potential. As a result,… …
20Scalar (physics) — In physics, a scalar is a simple physical quantity that is not changed by coordinate system rotations or translations (in Newtonian mechanics), or by Lorentz transformations or space time translations (in relativity). (Contrast to… …
