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effective dielectric constant

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  • Effective medium approximations — or effective medium theory (sometimes abbreviated as EMA or EMT) are physical models that describe the macroscopic properties of a medium based on the properties and the relative fractions of its components. They can be discrete models such as… …   Wikipedia

  • Effective Medium Approximations — are analytical models that describe the macroscopic properties of a medium based on the properties and the relative fractions of its components. They are continuous theories and do not relate directly to percolating systems. Indeed, among the… …   Wikipedia

  • Acid dissociation constant — Acetic acid, a weak acid, donates a proton (hydrogen ion, high …   Wikipedia

  • Non-Radiative Dielectric waveguide (NRD) — Figure 1 Contents 1 Introduction 2 The dispersion relation in the NRD wave …   Wikipedia

  • capacitor dielectric and piezoelectric ceramics — ▪ ceramics Introduction       advanced industrial materials that, by virtue of their poor electrical conductivity, are useful in the production of electrical storage or generating devices.       Capacitors (capacitor) are devices that store… …   Universalium

  • RC time constant — In an RC circuit, the value of the time constant (in seconds) is equal to the product of the circuit resistance (in ohms) and the circuit capacitance (in farads), i.e. au = R × C . It is the time required to charge the capacitor, through the… …   Wikipedia

  • Hamaker constant — The Hamaker constant A can be defined for a van der Waals (vdW) body body interaction::A=pi^2 imes C imes ho 1 imes ho 2where ho 1 and ho 2 are the number of atoms per unit volume in two interacting bodies and C is the coefficient in the particle …   Wikipedia

  • Coaxial cable — RG 59 flexible coaxial cable composed of: A: outer plastic sheath B: woven copper shield C: inner dielectric insulator D: copper core Coaxial cable, or coax, has an inner conductor surrounded by a flexible, tubular insulating layer, surrounded by …   Wikipedia

  • Microstrip — Cross section of microstrip geometry. Conductor (A) is separated from ground plane (D) by dielectric substrate (C). Upper dielectric (B) is typically air. Microstrip is a type of electrical transmission line which can be fabricated using printed… …   Wikipedia

  • Zorica Pantic — Zorica Pantic, born circa 1951 in the former Yugoslavia, is a college administrator and professor of electrical engineering. In 2005 she was appointed the fourth president of Wentworth Institute of Technology in Boston.Pantic was previously the… …   Wikipedia

  • Ladder line — or window line is a type of transmission line similar to twin lead for balanced connection of antennas. Ladder line is constructed as a pair of evenly spaced wires with supportive plastic webbing holding the wires apart. The plastic webbing has… …   Wikipedia

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