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Что (кто) такое retarded potential - определение
Найдено результатов: 489
Retarded potential
TYPE OF POTENTIAL IN ELECTRODYNAMICS
Advanced potential; Retarded and advanced potential
In electrodynamics, the retarded potentials are the electromagnetic potentials for the electromagnetic field generated by time-varying electric current or charge distributions in the past. The fields propagate at the speed of light c, so the delay of the fields connecting cause and effect at earlier and later times is an important factor: the signal takes a finite time to propagate from a point in the charge or current distribution (the point of cause) to another point in space (where the effect is measured), see figure below.
Electric potential
LINE INTEGRAL OF THE ELECTRIC FIELD
Electrical potential; Electrostatic potential; Electric scalar potential; Electrical scalar potential; Electrical potential difference; Electric Scalar Potential; Coulomb potential; Coulomb Potential; Electric Potential; Electrical Potential; Potential electric; Scalar potential difference; Vector potential difference; Electric field potential
The electric potential (also called the electric field potential, potential drop, the electrostatic potential) is defined as the amount of work energy needed to move a unit of electric charge from a reference point to the specific point in an electric field. More precisely, it is the energy per unit charge for a test charge that is so small that the disturbance of the field under consideration is negligible.
Scalar potential
![Plot of a two-dimensional slice of the gravitational potential in and around a uniform spherical body. The [[inflection point]]s of the cross-section are at the surface of the body.](https://commons.wikimedia.org/wiki/Special:FilePath/GravityPotential.jpg?width=200 "Plot of a two-dimensional slice of the gravitational potential in and around a uniform spherical body. The [[inflection point]]s of the cross-section are at the surface of the body.")
CONCEPT IN VECTOR ANALYSIS AND PHYSICS
Scalar Potential; Scaler potential
In mathematical physics, scalar potential, simply stated, describes the situation where the difference in the potential energies of an object in two different positions depends only on the positions, not upon the path taken by the object in traveling from one position to the other. It is a scalar field in three-space: a directionless value (scalar) that depends only on its location.
Electromagnetic four-potential
RELATIVISTIC VECTOR FIELD
Electromagnetic potential; 4-potential; Four-potential; 4-potential A; Four vector potential; Electromagnetic four potential
An electromagnetic four-potential is a relativistic vector function from which the electromagnetic field can be derived. It combines both an electric scalar potential and a magnetic vector potential into a single four-vector.
Reversal potential
IN A BIOLOGICAL MEMBRANE
Nernst potential; Equilibrium potential; Electrochemical equilibrium potential
In a biological membrane, the reversal potential (also known as the Nernst potential or equilibrium potential) of an ion is the membrane potential at which there is no net (overall) flow of that particular ion from one side of the membrane to the other. The flow of any inorganic ion, such as Na+ or K+, through an ion channel (since membranes are normally impermeable to ions) is driven by the electrochemical gradient for that ion.
Reduction potential
MEASURE OF TENDENCY OF A SUBSTANCE TO GAIN OR LOSE ELECTRONS
Redox potential; Standard reduction potential; Reductive potential; Oxidation-reduction potential; Oxidation reduction potential; Oxidation/reduction potential; Indicator electrode; Eh (geology); Eh geology; Eh (chemistry); Oxidation potential; Redoz potential; Reductive conditions; Reductive condition
Redox potential (also known as oxidation / reduction potential, ORP, pe, E_{red}, or E_{h}) is a measure of the tendency of a chemical species to acquire electrons from or lose electrons to an electrode and thereby be reduced or oxidised respectively. Redox potential is expressed in volts (V).
Spontaneous potential
MEASUREMENT TAKEN BY OIL INDUSTRY WELL LOGGERS TO CHARACTERISE ROCK FORMATION PROPERTIES
Spontaneous Potential; Formation Evaluation Spontaneous Potential; Self potential
Spontaneous potentials are often measured down boreholes for formation evaluation in the oil and gas industry, and they can also be measured along the Earth's surface for mineral exploration or groundwater investigation. The phenomenon and its application to geology was first recognized by Conrad Schlumberger, Marcel Schlumberger, and E.
Lennard-Jones potential
!['''Figure 6'''. Vapor–liquid equilibria of binary Lennard-Jones mixtures. In all shown cases, component 2 is the more volatile component (enriching in the vapor phase). The units are given in <math>\varepsilon</math> and <math>\sigma</math> of component 1, which is the same in all four shown mixtures. The temperature is <math>T=0.92\,\varepsilon k_\mathrm{B}^{-1}</math>. Symbols are molecular simulation results and lines are results from an [[equation of state]]. Data taken from Ref.<ref name="Stephan e1699185"/>](https://commons.wikimedia.org/wiki/Special:FilePath/LJ mixtures.png?width=200 "'''Figure 6'''. Vapor–liquid equilibria of binary Lennard-Jones mixtures. In all shown cases, component 2 is the more volatile component (enriching in the vapor phase). The units are given in <math>\varepsilon</math> and <math>\sigma</math> of component 1, which is the same in all four shown mixtures. The temperature is <math>T=0.92\,\varepsilon k_\mathrm{B}^{-1}</math>. Symbols are molecular simulation results and lines are results from an [[equation of state]]. Data taken from Ref.<ref name=\"Stephan e1699185\"/>")
MATHEMATICAL MODEL THAT APPROXIMATES THE INTERACTION BETWEEN A PAIR OF NEUTRAL ATOMS OR MOLECULES
Liénard-jones potential; Liénard-Jones Potential; Lennard Jones potential; Lenard-Jones potential; Lenard Jones potential; LJ potential; L-J potential; Lennard jones potential; Molecular repulsion; Lienard-jones potential; Lienard-Jones Potential; Lenard-Jones 6-12 potential; Lenard-Jone 6-12 potential; Lennard–Jones potential; Lennard-Jones interaction; Lennart-Jones potential
The Lennard-Jones potential (also termed the LJ potential or 12-6 potential) is an intermolecular pair potential. Out of all the intermolecular potentials, the Lennard-Jones potential is the one that has been the most extensively studied.
Zeta potential
![[A] pH-dependant ionisation of a weak acid [HA] and its conjugated base [A-] drawn using Henderson-Hasselbalch equation; [B] Ionisation and solubility of a pH-responsive polymer as a function of pH [C] A schematic showing the potential difference as a function of distance from the charged surface of a particle in a medium; [D] Dissolution mechanism of pH-responsive polymers reproduced with permission from. The encircled numbers in [D] represent (1) Diffusion of water and hydroxyl ions into the polymer matrix to form a gel layer, (2) Ionization of polymer chains in the gel layer, (3) Disentanglement of polymer chains out of the gel layer to the polymer-solution interface, (4) Further ionization of polymer chains at the polymer interface, (5) Diffusion of disentangled polymer chains away from the interface toward the bulk solution.<ref name=":0" />](https://commons.wikimedia.org/wiki/Special:FilePath/Zeta potential and pka.jpg?width=200 "[A] pH-dependant ionisation of a weak acid [HA] and its conjugated base [A-] drawn using Henderson-Hasselbalch equation; [B] Ionisation and solubility of a pH-responsive polymer as a function of pH [C] A schematic showing the potential difference as a function of distance from the charged surface of a particle in a medium; [D] Dissolution mechanism of pH-responsive polymers reproduced with permission from. The encircled numbers in [D] represent (1) Diffusion of water and hydroxyl ions into the polymer matrix to form a gel layer, (2) Ionization of polymer chains in the gel layer, (3) Disentanglement of polymer chains out of the gel layer to the polymer-solution interface, (4) Further ionization of polymer chains at the polymer interface, (5) Diffusion of disentangled polymer chains away from the interface toward the bulk solution.<ref name=\":0\" />")
ELECTROKINETIC POTENTIAL IN COLLOIDAL DISPERSIONS
Electrokinetic potential; Henry's equation; Henry function
Zeta potential is the electrical potential at the slipping plane. This plane is the interface which separates mobile fluid from fluid that remains attached to the surface.
Magnetic vector potential
VECTOR FIELD WHOSE CURL IS THE MAGNETIC FLUX DENSITY
Magnetic Vector Potential; Vector magnetic potential; Magnetic potential field
In classical electromagnetism, magnetic vector potential (often called A) is the vector quantity defined so that its curl is equal to the magnetic field: \nabla \times \mathbf{A} = \mathbf{B}. Together with the electric potential φ, the magnetic vector potential can be used to specify the electric field E as well.
