electromagnetism, charge density is the amount of electric charge per unit length, surface area, or volume. Volume charge density (symbolized by the...

A charge density wave (CDW) is an ordered quantum fluid of electrons in a linear chain compound or layered crystal. The electrons within a CDW form a standing...

Charge carrier density, also known as carrier concentration, denotes the number of charge carriers per volume. In SI units, it is measured in m−3. As...

is balanced by an equal density of opposite charges within the volume. Charges that are not balanced are part of the free charge discussed below. For a...

d3r′ denotes an elementary volume in V. For an array of point charges, the charge density becomes a sum of Dirac delta functions: ρ ( r ) = ∑ i = 1 N q...

calculating density Densities of the elements (data page) List of elements by density Air density Area density Bulk density Buoyancy Charge density Density prediction...

linear charge density (the amount of electric charge per unit length) are two common examples used in science and engineering. The term linear density or...

electromagnetism, current density is the amount of charge per unit time that flows through a unit area of a chosen cross section. The current density vector is defined...

Poisson's equation is the potential field caused by a given electric charge or mass density distribution; with the potential field known, one can then calculate...

on positive charge and terminate on negative charge. They are parallel to the direction of the electric field at each point, and the density of these field...