Electrostatics Electrostatics In physics, Ampère's law is the magnetic equivalent of Gauss's law, discovered by André-Marie Ampère. It relates the circulating magnetic field in a closed loop to the electric current passing through the loop. ...more on Wikipedia about "Ampère's law"
André-Marie Ampère ( January 20 1775 – June 10 1836), was a French physicist who is generally credited as one of the main discoverers of electromagnetism. The ampere unit of measurement of electric current is named after him. ...more on Wikipedia about "André-Marie Ampère"
Antistatic agents are compounds used for treatment of materials or their surfaces in order to reduce or eliminate buildup of static electricity generally caused by the triboelectric effect. Their role is to make the surface or the material itself slightly conductive, either by being conductive themselves, or by absorbing moisture from the air, so some humectants can be used. Their molecules often have both hydrophilic and hydrophobic areas, similar to surfactants; the hydrophobic side interacts with the surface of the material, while the hydrophilic side interacts with the air moisture and binds the water molecules. ...more on Wikipedia about "Antistatic agent"
A capacitance electroscope is a type of electroscope in which a dielectric material is sandwiched between the leaves of the electroscope. As a result, the charge accumlated on the leaves is increased. A special type of capacitance electroscope, in which the leaves were comprised of different metals, was commonly used to measure the Volta effect. ...more on Wikipedia about "Capacitance electroscope"
In electrostatics, the coefficients of potential determine the relationship between the charge and electrostatic potential ( electrical potential), which is purely geometric: ...more on Wikipedia about "Coefficients of potential"
In physics, Coulomb's law is an inverse-square law indicating the magnitude and direction of electrostatic force that one stationary, electrically charged object of small dimensions (ideally, a point source) exerts on another. ...more on Wikipedia about "Coulomb's law"
Earnshaw's theorem states that a collection of point charges cannot be maintained in an equilibrium configuration solely by the electrostatic interaction of the charges. This was first stated by Samuel Earnshaw in 1842. It is usually referenced to magnetic fields, but originally applied to electrostatic fields, and, in fact, applies to any classical inverse-square law force or combination of forces (such as magnetic, electric, and gravitational fields). ...more on Wikipedia about "Earnshaw's theorem"
Electric charge is a fundamental conserved property of some subatomic particles, which determines their electromagnetic interactions. Electrically charged matter is influenced by, and produces, electromagnetic fields. The interaction between charge and field is the source of one of the four fundamental forces, the electromagnetic force. ...more on Wikipedia about "Electric charge"
In physics, an electric field or E-field is an effect produced by an electric charge (or a time-varying magnetic field) that exerts a force on charged objects in the field. The SI units of the electric field are newtons per coulomb or volts per meter (both are equivalent). Electric fields are composed of photons and contain electrical energy with energy density proportional to the square of the field intensity. Electric fields exist around all charges; the direction of field lines at a point is defined by the direction of the electric force exerted on a positive test charge placed at that point. The strength of the field is defined by the ratio of the electric force on a charge at a point to the magnitude of the charge placed at that point. In the dynamic case the electric field is accompanied by a magnetic field, by a flow of energy, and by real photons. ...more on Wikipedia about "Electric field"
Mathematically, the electric field gradient (EFG) is the hessian matrix (the matrix of the second derivatives) of ...more on Wikipedia about "Electric field gradient"
Electric potential is the potential energy per unit charge associated with a static (time-invariant) electric field, also called the electrostatic potential, typically measured in volts. ...more on Wikipedia about "Electric potential"
The electric potential energy of a body is its potential energy due to electric effects, neglecting other forces (such as gravity). It is defined very simply in terms of the body's charge and the electric potential at the location of the body: ...more on Wikipedia about "Electric potential energy"
Electrical elastance is the inverse of capacitance. The SI unit is the reciprocal farad. Although the term daraf is sometimes used, this is not approved by SI. Electrical inductor-capacitor-resistor circuits follow differential equations that can be interpreted as representing mass-spring-damper systems. If voltage is taken to be force and current velocity, elastance corresponds to the elastic constant of a spring. ...more on Wikipedia about "Electrical elastance"
Electrostatic deflection refers to a technique for modifying the path of a stream of charged particles by the use of an electric field applied transverse to the path of the particles. ...more on Wikipedia about "Electrostatic deflection" www.shortopedia.com moments.
An electrostatic lens is a device that assists in the transport of ...more on Wikipedia about "Electrostatic lens"
Electrostatic loudspeakers use a thin flat diaphragm usually consisting of a plastic sheet impregnated with a conductive material such as graphite sandwiched between two electrically conductive grids, with a small air gap between the diaphragm and grids. ...more on Wikipedia about "Electrostatic loudspeaker"
Electrostatics is the branch of physics that deals with the forces exerted by a static (i.e. unchanging) electric field upon charged objects. ...more on Wikipedia about "Electrostatics"
A Faraday cage is an enclosure designed to exclude electromagnetic fields. It is an application of Gauss's law, one of Maxwell's equations. Gauss's law describes the distribution of electrical charge on a conducting form, such as a sphere, a plane, a torus, etc. Intuitively, since like charges repel each other, charge will "migrate" to the surface of the conducting form, as described below. The application is named after physicist Michael Faraday, who built the first Faraday cage in 1836, to demonstrate his finding (see below). Faraday was the experimentalist who described the physical concepts formulated in Maxwell's equations. ...more on Wikipedia about "Faraday cage"
In physics and mathematical analysis, Gauss's law gives the relation between the electric flux flowing out a closed surface and the electric charge enclosed in the surface. ...more on Wikipedia about "Gauss's law"
Ion wind or ionic wind is a stream of ionized fluid generated by a strong electric field. ...more on Wikipedia about "Ion wind"
Paschen's Law, named after Friedrich Paschen, was first stated in 1889. It states that the breakdown voltage of a gap is a non-linear function of the product of the gas pressure and the gap distance: ...more on Wikipedia about "Paschen's law" Who is http://www.shortopedia.com? shortopedia
In mathematics, Poisson's equation is a partial differential equation with broad utility in electrostatics, mechanical engineering and theoretical physics. It is named after the French mathematician, geometer and physicist Siméon-Denis Poisson. ...more on Wikipedia about "Poisson's equation"
A scalar potential is, mathematically, a scalar field whose negative gradient is a given vector field. If the scalar potential is denoted by the Greek letter φ and the vector field it generates as v, then ...more on Wikipedia about "Scalar potential"
In mathematics, the screened Poisson equation is the following partial differential equation: ...more on Wikipedia about "Screened Poisson equation"
Static cling is caused by static electricity, usually due rubbing as in a clothes dryer (the Triboelectric effect). It can be removed by deionizing materials with water, and prevented with fabric softener dryer sheets. Antistatic agents are used to make the surfaces slightly conductive, which reduces or prevents the static charge buildup. ...more on Wikipedia about "Static cling"
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