X-Nico

unusual facts about electrostatic



Angular momentum coupling

Or two charged particles, each with a well-defined angular momentum, may interact by Coulomb forces, in which case coupling of the two one-particle angular momenta to a total angular momentum is a useful step in the solution of the two-particle Schrödinger equation.

Boltzmann relation

In a plasma, the Boltzmann relation describes the number density of an isothermal charged particle fluid when the thermal and the electrostatic forces acting on the fluid have reached equilibrium.

Carbon nanotube nanomotor

Coulomb's law states that the electrostatic force between two objects is inversely proportional to the square of their distance.

Centimetre–gram–second system of units

The first is Coulomb's law, F = k {\rm C} \frac{q \cdot q^\prime}{d^2}, which describes the electrostatic force F between electric charges q and q^\prime, separated by distance d.

Charles-Augustin de Coulomb

He was best known for developing Coulomb's law, the definition of the electrostatic force of attraction and repulsion.

Coulomb barrier

The Coulomb barrier, named after Coulomb's law, which is named after physicist Charles-Augustin de Coulomb (1736–1806), is the energy barrier due to electrostatic interaction that two nuclei need to overcome so they can get close enough to undergo a nuclear reaction.

Custom-fit

This technique is based on the process principles of xerographic printers, (for example, laser or LED printers) that combine electrostatic printing with photography.

Electric charge

Coulomb's law quantifies the electrostatic force between two particles by asserting that the force is proportional to the product of their charges, and inversely proportional to the square of the distance between them.

Electric potential energy

Using Coulomb's law, it is known that the electrostatic force F and the electric field E created by a discrete point charge Q are radially directed from Q.

Electrostatic generator

Oleg D. Jefimenko, "Electrostatic Motors: Their History, Types, and Principles of Operation".

Electrostatic motor

In the 1740s and 1750s, the first electrostatic motors were developed by Andrew Gordon and by Benjamin Franklin.

Electrostatic separator

An electrostatic separator is a device for separating particles by mass in a low energy charged beam.

Ewald summation

Ewald summation, named after Paul Peter Ewald, is a method for computing the interaction energies of periodic systems (e.g. crystals), particularly electrostatic energies.

The Ewald summation was developed by Paul Peter Ewald in 1921 (see References below) to determine the electrostatic energy (and, hence, the Madelung constant) of ionic crystals.

Exciton

An exciton is a bound state of an electron and an electron hole which are attracted to each other by the electrostatic Coulomb force.

Iwatsu Electric

After years of research in Europe and the U.S., Iwatsu took notice of RCA's electrostatic printer and copier technology (electrofax).

James Wimshurst

Wimshurst constructed several of the known types of electrostatic generators, such as those created by W. Nicholson, F. P. Carré and W. T. B. Holtz.

Jefimenko's equations

These equations are the time-dependent generalization of Coulomb's law and the Biot-Savart law to electrodynamics, which were originally true only for electrostatic and magnetostatic fields, and steady currents.

Kelvin water dropper

If there is a steady stream of water through the rings, and if the streams are not perfectly centered in the rings, one can observe the deflection of the streams prior to each spark due to the electrostatic attraction via Coulomb's law of opposite charges.

Length contraction

Although both FitzGerald and Lorentz alluded to the fact that electrostatic fields in motion were deformed ("Heaviside-Ellipsoid" after Oliver Heaviside, who derived this deformation from electromagnetic theory in 1888), it was considered an ad hoc hypothesis, because at this time there was no sufficient reason to assume that intermolecular forces behave the same way as electromagnetic ones.

Magnetic trap

Penning trap, used to trap charged particles or ions in a combination of electrostatic potential and uniform magnetic field

Molecular Hamiltonian

The molecular Hamiltonian is a sum of several terms: its major terms are the kinetic energies of the electrons and the Coulomb (electrostatic) interactions between the two kinds of charged particles.

Partial charge

Partial atomic charges are used in molecular mechanics force fields to compute the electrostatic interaction energy using Coulomb's law.

Pelletron

A pelletron is a type of electrostatic particle accelerator similar to a Van de Graaff generator.

Periodic boundary conditions

PBC can be used in conjunction with Ewald summation methods (usually particle mesh Ewald) of accounting for electrostatic forces in the system.

Photocopier

The first electrostatic color copier was released by Canon in 1973.

Screening effect

In solids, especially in metals and semiconductors, the electrostatic screening or screening effect reduces the electrostatic field and Coulomb potential of an ion inside the solid.

The Man in the Morgue

Brennan suspects Mike Doyle's girlfriend for his murder, and Sam Potter scatters ashes across the body of Mouton, revealing an electrostatic charge, as some ashes stuck to the corpse more than others, revealing an emblem of a Cadillac Brougham, the car belonging to Richard Benoit.

Water model

The electrostatic interaction is modeled using Coulomb's law and the dispersion and repulsion forces using the Lennard-Jones potential.


see also