dielectric

Definitions

  • WordNet 3.6
    • n dielectric a material such as glass or porcelain with negligible electrical or thermal conductivity
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Webster's Revised Unabridged Dictionary
    • n Dielectric (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.
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Century Dictionary and Cyclopedia
    • dielectric Transmitting electric effects without conduction; nonconducting.
    • n dielectric A substance through or across which electric force is acting. The walls of a Leyden jar; the intervening medium, solid, liquid, or gaseous, between the plates of a condenser; and the insulating sheath around the conductor of a telegraph-cable, are examples of dielectrics. Electric induction across a dielectric causes a stress in it which, if great enough, will produce rupture. The maximum intensity of this stress which the material can bear is called its dielectric strength. When the dielectric strength of the air between two clouds, or between a cloud and the earth, is unable to withstand the electric forces, a flash of lightning takes place. The fracture of stones in buildings, of trees, etc., in a thunderstorm are illustrations of the effect of excessive dielectric stress.
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Chambers's Twentieth Century Dictionary
    • adj Dielectric dī-e-lek′trik non-conducting: transmitting electric effects without conducting
    • n Dielectric a substance through which electric force acts
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Etymology

Webster's Revised Unabridged Dictionary
Pref. dia-, + electric,

Usage

In literature:

A portion of the charge was absorbed by the dielectric itself.
"Faraday As A Discoverer" by John Tyndall
Some dielectrics 0.2 mm.
"Scientific American Supplement, No. 795, March 28, 1891" by Various
Perhaps it is because the dielectric losses in the liquid are smaller.
"Experiments with Alternate Currents of High Potential and High Frequency" by Nikola Tesla
The following is an example of the division of a charge by the two apparatus, air being the dielectric in both of them.
"Experimental Researches in Electricity, Volume 1" by Michael Faraday
The dielectric strength of enamel insulation is much greater than that of either silk or cotton insulation of equal thickness.
"Cyclopedia of Telephony & Telegraphy Vol. 1" by Kempster Miller
But tell me, you've done work on dielectrics, haven't you?
"Security" by Poul William Anderson
A static discharge passing through a dielectric.
"Electricity for Boys" by J. S. Zerbe
The dielectric consisted of about equal parts of hard paraffin and vaseline.
"On Laboratory Arts" by Richard Threlfall
That electromotive force acting on a dielectric produces what we call electric displacement.
"The World's Greatest Books - Volume 15 - Science" by Various
Lorentz of Leiden, from considerations based on the Clausius-Mossotti theory of dielectrics.
"Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1" by Various
Water, likewise, has a higher dielectric constant than any other common liquid.
"The Chemistry of Plant Life" by Roscoe Wilfred Thatcher
If the dielectric or separating insulator has a constant K, then the capacity becomes K times as great.
"Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 3" by Various
Thus if F is the field strength, K the dielectric constant, and U the mechanical force acting on a unit charge, F = KU.
"The New Gresham Encyclopedia" by Various
Fairly high dielectric or insulation resistance; 5.
"Hawkins Electrical Guide, Number One" by Nehemiah Hawkins
As the dielectric for such a condenser, only two materials seem to be of any practical use, viz., glass and micanite.
"Hertzian Wave Wireless Telegraphy" by John Ambrose Fleming
It soon appeared to Faraday that the nature of the dielectric had very much to do with electric induction.
"Heroes of Science: Physicists" by William Garnett
Similarly, the dielectric constants of a non-conducting crystal may be expressed by a sphere, spheroid or ellipsoid.
"Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 7" by Various
Since it is difficult to exclude the gas perfectly when solid insulators are used, it is necessary to resort to liquid dielectrics.
"The inventions, researches and writings of Nikola Tesla" by Thomas Commerford Martin
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In news:

Kutasi has been with Dielectric for 17 years, during which he held positions in project management, production, customer service, and sales.
Dielectric , part of the SPX empire, has debuted the DCR-T.
A game-changing transformer dielectric fluid.
Epoxy Powder Coating as a High- Dielectric Insulator.
Recently announced the release of a new high-temperature C0G dielectric platform.
Some recent work covers the design, fabrication, and measurements of an axisymmetric dielectric lens that features a sectorial radiation pattern at 77 GHz.
Insulating materials pertains to dielectrics, heat sinks, etc.
The other non-rectangular waveguides that are popular are the fully round waveguide from Andrew and the truncated elliptical waveguide from Dielectric.
Up to now, radio-frequency (RF) welding or sealing of films, foams, and fabrics has been limited mainly to polar resins with high dielectric loss factors—particularly flexible PVC and TPU.
All conductors, which are coated with a polyethylene dielectric compound, consist of high-density, oxygen-free copper.
Revision of D877 - 02(2007) Standard Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using Disk Electrodes.
WK39531 Standard Test Method for Dielectric Breakdown Voltage of Insulating Liquids Using Disk Electrodes.
Unlike copper cables that can act as an antenna, glass and plastic fibers are dielectric materials and, thus, immune to the stray EM fields common in motors drives, ac/dc power inverters, and power-distribution systems.
X-FAB Silicon Foundries today announced its XT018, the world's first trench dielectric isolated SOI foundry technology offering for 200V MOS capability at 180nm.
Task-Vision Laser Safety Glasses from Vision USA Laser Safety Glasses and Magnification are available in polycarbonate, glass and thin dielectric filter glass.
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In science:

Fig. 2. Real and imaginary components of longitudinal dielectric permittivity of a regular plasma at the frequency near plasma frequency.
Influence of Random Irregularities on Quasi-Thermal Noise Spectrum of Plasma
The PHE finds its origin in the Faraday effect, present inside the dielectric scatterers, which slightly changes their scattering amplitude.
Transport mean free path for Magneto-Transverse Light Diffusion: an alternative approach
The scattering matrix and the scattering cross-section were calculated exactly for a single Faraday-active dielectric sphere using perturbation theory .
Transport mean free path for Magneto-Transverse Light Diffusion: an alternative approach
The experiments investigated the dependence of the PHE on the volume fraction of the scatterers, first on the real part of the dielectric constant of the scatterers , and more recently on their imaginary part .
Transport mean free path for Magneto-Transverse Light Diffusion: an alternative approach
The single scattering of light by one dielectric sphere made of a Faraday-active material embedded in an isotropic medium with no magneto-optical properties is first considered.
Transport mean free path for Magneto-Transverse Light Diffusion: an alternative approach
In a magnetic field, the dielectric constant of the sphere, ǫB , is a tensor of rank two.
Transport mean free path for Magneto-Transverse Light Diffusion: an alternative approach
Another possible influencing factor might have been the fact that it was easier to compute the scattering by metallic particles using the Mie theory because to get a λ−1 law required smaller particles than if they were dielectric and computations for large particles were too tedious. .
Cosmic Dust in the 21st Century
The peculiarities of nonlinear dielectric permittivity of PMN (see ) speak in favour of this statement.
Phase diagram of mixed system of ferroelectric relaxors in the random field theory framework
Vogel-Fulcher law which describes temperature dependence of dynamic dielectric susceptibility of relaxors can be related to the distribution of random electric fields in the mixed system .
Random field based model of mixed ferroelectrics phase diagram
Barfoot, J. C., and Tailor, G. W., 1979, Polar Dielectric and Their Applications (Macmillan Press). Binder, K., and Young, A. P., 1986, Rev.
Random field based model of mixed ferroelectrics phase diagram
Relaxor ferroelectrics (or relaxors) represent a new low-temperature state of polar dielectrics, which can be regarded as an intermediate state between dipolar glasses and normal ferroelectrics [1,2].
Dynamics of relaxor ferroelectrics
Typically, the asymptotic regime t ≫ tc is explored in a dielectric relaxation experiment.
Dynamics of relaxor ferroelectrics
Thus far, the only known case of quasisemicircular lineshapes in optical scattering has been predicted and experimentally verified in dielectric microspheres with randomly distributed internal scatterers.
Random Scattering by Atomic Density Fluctuations in Optical Lattices
This dielectric effect has been used in the work of Polchinski and Strassler (2000) on string duals of super Yang-Mills theories with reduced supersymmetry, and in the work of McGreevy, Susskind, and Toumbas (2000) on giant gravitons in AdS space.
M(atrix) Theory: Matrix Quantum Mechanics as a Fundamental Theory
Where µ0 is the permeability of free space, E (x, t) is the electric field , and the dielectric constant ε(x) is determined by the random configuration of the system. σ is not just the common conductivity loss, but can be interpreted by the total mode loss including the surface loss of the system by radiation.
Localized Random Lasing Modes and a New Path for Observing Localization
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