mass-energy equation
101Breit equation — The Breit equation is a relativistic wave equation derived by Gregory Breit in 1929 based on the Dirac equation, which formally describes two or more massive spin 1/2 particles (electrons, for example) interacting electromagnetically to the first …
102Added mass — In fluid mechanics, added mass or virtual mass is the inertia added to a system because an accelerating or decelerating body must move some volume of surrounding fluid as it moves through it, since the object and fluid cannot occupy the same… …
103Center of mass — In physics, the center of mass of a system of particles is a specific point at which, for many purposes, the system s mass behaves as if it were concentrated. The center of mass is a function only of the positions and masses of the particles that …
104Wireless energy transfer — or wireless power is the transmission of electrical energy from a power source to an electrical load without artificial interconnecting conductors. Wireless transmission is useful in cases where interconnecting wires are inconvenient, hazardous,… …
105Lamm equation — The Lamm equation [O Lamm: (1929) Die differentialgleichung der ultrazentrifugierung Arkiv für matematik, astronomi och fysik 21B No. 2, 1 4] describes the sedimentation and diffusion of a solute under ultracentrifugation in traditional sector… …
106Acoustic wave equation — In physics, the acoustic wave equation governs the propagation of acoustic waves through a material medium. The form of the equation is a second order partial differential equation. The equation describes the evolution of acoustic pressure p or… …
107atomic mass — Chem. the mass of an isotope of an element measured in units formerly based on the mass of one hydrogen atom taken as a unit or on 1/16 the mass of one oxygen atom, but after 1961 based on 1/12 the mass of the carbon 12 atom. Abbr.: at. m. [1895… …
108Saha equation — ▪ astronomy mathematical relationship between the observed spectra (spectrum) of stars (star) and their temperatures. The equation was stated first in 1920 by the Indian astrophysicist Meghnad N. Saha (Saha, Meghnad N.). It expresses how… …
109Turbulent Kinetic Energy — Turbulence Kinetic Energy (TKE) is the mean kinetic energy per unit mass associated with eddies in turbulent flow. It is a concept used to assess what contribution to buoyancy is brought by turbulence.The production of TKE equals the sum of… …
110Correspondence principle — This article discusses quantum theory and relativity. For other uses, see Correspondence principle (disambiguation). In physics, the correspondence principle states that the behavior of systems described by the theory of quantum mechanics (or by… …
