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O que (quem) é dielectric - definição

ELECTRICALLY POORLY CONDUCTING OR NON-CONDUCTING, NON-METALLIC SUBSTANCE OF WHICH CHARGE CARRIERS ARE GENERALLY NOT FREE TO MOVE

Dielectric level; Paraelectricity; Dielectric dispersion; Dipolar polarization; Ionic polarization; Dielectric media; Dielectric medium; Dielectric relaxation; Debye relaxation; Debye equation; Dielectrics; Dialectric; Dielectric materials; Relaxation time of electrons; Dielectric relaxation as a chemical rate process; Dielectric relaxation asa chemical rate process; Paraelectric; Dielectric polarization; Dielectric properties; Dielectric response; Perfect dielectric; Dielectric material; Paraelectrics; Ionic polarisation

Dielectric

·noun Any substance or medium that transmits the electric force by a process different from conduction, as in the phenomena of induction; a nonconductor. separating a body electrified by induction, from the electrifying body.

Dielectric

A non-conductor; a substance, the different parts of which may, after an electric disturbance, remain, without any process of readjustment, and for an indefinite period of time, at potentials differing to any extent (Daniell). There is no perfect dielectric. The term dielectric is generally only used when an insulator acts to permit induction to take place through it, like the glass of a Leyden jar.

Dielectric

In electromagnetism, a dielectric (or dielectric material or dielectric medium) is an electrical insulator that can be polarised by an applied electric field. When a dielectric material is placed in an electric field, electric charges do not flow through the material as they do in an electrical conductor, because they have no loosely bound, or free, electrons that may drift through the material, but instead they shift, only slightly, from their average equilibrium positions, causing dielectric polarisation.

https://en.wikipedia.org/wiki/Dielectric

Wikipédia

Dielectric

In electromagnetism, a dielectric (or dielectric medium) is an electrical insulator that can be polarised by an applied electric field. When a dielectric material is placed in an electric field, electric charges do not flow through the material as they do in an electrical conductor, because they have no loosely bound, or free, electrons that may drift through the material, but instead they shift, only slightly, from their average equilibrium positions, causing dielectric polarisation. Because of dielectric polarisation, positive charges are displaced in the direction of the field and negative charges shift in the direction opposite to the field (for example, if the field is moving parallel to the positive x axis, the negative charges will shift in the negative x direction). This creates an internal electric field that reduces the overall field within the dielectric itself. If a dielectric is composed of weakly bonded molecules, those molecules not only become polarised, but also reorient so that their symmetry axes align to the field.

The study of dielectric properties concerns storage and dissipation of electric and magnetic energy in materials. Dielectrics are important for explaining various phenomena in electronics, optics, solid-state physics and cell biophysics.

https://en.wikipedia.org/wiki/Dielectric

Exemplos do corpo de texto para dielectric

1. The solution involves replacing the silicon dioxide used for more than 40 years as an insulator, but has since been shaved too thin, with various metals in parts called the gate, which turns the transistor on and off, and the gate dielectric, an insulating layer, which helps improve transistor performance and retain energy.