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dielectric    
n. 电介体,绝缘体
a. 非传导性的

电介体,绝缘体非传导性的

dielectric
介电质; 绝缘材料 DIELEX

dielectric
电介质

dielectric
n 1: a material such as glass or porcelain with negligible
electrical or thermal conductivity [synonym: {insulator},
{dielectric}, {nonconductor}] [ant: {conductor}]

Dielectric \Di`e*lec"tric\, n. [Pref. dia- electric.] (Elec.)
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.
[1913 Webster]


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  • Dielectric - Wikipedia
    In electromagnetism, a dielectric (or dielectric medium) is an electrical insulator that can be polarised by an applied electric field
  • Dielectric | Definition, Properties, Polarization | Britannica
    Dielectric, insulating material or a very poor conductor of electric current When dielectrics are placed in an electric field, practically no current flows in them because, unlike metals, they have no loosely bound, or free, electrons that may drift through the material
  • What is a dielectric material and how does it work? - TechTarget
    A dielectric material is a poor conductor of electricity but an efficient supporter of electrostatic fields It can store electrical charges, have a high specific resistance and a negative temperature coefficient of resistance
  • Home - Dielectric
    Dielectric holds more patents than any other antenna manufacturer in the world—some from as far back as 1942, others so new, they’re still in John’s “active” file “Fanatical precision” — Shane Cyr, Mechanical Engineer
  • Dielectric Materials: Definition, Properties and Applications
    Dielectric Material Definition: A dielectric material is an electrical insulator that becomes polarized when exposed to an electric field, aligning its internal charges without conducting electricity
  • What Are Dielectrics? - BYJUS
    Dielectrics, in general, can be described as materials that are very poor conductors of electric current They are basically insulators and contain no free electrons Dielectrics can be easily polarised when an electric field is applied to it, and thus, their behaviour in an electric field is entirely different from that of conductors
  • Dielectrics - HyperPhysics
    The presence of the dielectric decreases the electric field produced by a given charge density The factor k by which the effective field is decreased by the polarization of the dielectric is called the dielectric constant of the material
  • 2. 5: Dielectrics - Physics LibreTexts
    Such substances are called dielectrics, and they actually provide an effect similar to what is seen in conductors, though it is not extreme enough to completely cancel the field Start with a slab of neutrally-charged dielectric located between two neutrally-charged conductor plates
  • Dielectrics - The Physics Hypertextbook
    The material placed across the plates of a capacitor like a little nonconducting bridge is a dielectric The plastic coating on an electrical cord is an insulator The glass or ceramic plates used to support power lines and keep them from shorting out to the ground are insulators
  • Dielectric - New World Encyclopedia
    A dielectric, or electrical insulator, is a material that is highly resistant to the flow of an electric current Dielectric materials can be solids, liquids, or gases In addition, a vacuum is an excellent dielectric An important application of dielectrics is to separate the plates of capacitors





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