Ground constants

Ground constants

In telecommunication, ground constants are the electrical parameters of earth, such as conductivity, permittivity, and magnetic permeability.

The values of these parameters vary with the local chemical composition and density of the Earth. For a propagating electromagnetic wave, such as a surface wave propagating along the surface of the Earth, these parameters vary with frequency and direction.

ee also

*Ground

References

*Federal Standard 1037C
*MIL-STD-188


Wikimedia Foundation. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • ground constants — grunto parametrai statusas T sritis radioelektronika atitikmenys: angl. ground constants vok. Erdbodenkonstanten, f rus. параметры почвы, m pranc. constantes de sol, f …   Radioelektronikos terminų žodynas

  • Ground (electricity) — In electrical engineering, ground or earth may be the reference point in an electrical circuit from which other voltages are measured, or a common return path for electric current, or a direct physical connection to the Earth. A typical earthing… …   Wikipedia

  • Semiempirical constants — ▪ Table Semiempirical constants*      a b      98 californium (Cf) 152.86 −52.9506 96 curium (Cm) 152.44 −53.6825 94 plutonium (Pu) 146.23 −52.0899 92 uranium (U) 147.49 −53.6565 90 thorium (Th) 144.19 −53.2644 88 radium (Ra) 139.17 −52.1476 86… …   Universalium

  • Surface wave — Diving grebe creates surface waves In physics, a surface wave is a mechanical wave that propagates along the interface between differing media, usually two fluids with different densities. A surface wave can also be an electromagnetic wave guided …   Wikipedia

  • List of electronics topics — Alphabetization has been neglected in some parts of this article (the b section in particular). You can help by editing it. This is a list of communications, computers, electronic circuits, fiberoptics, microelectronics, medical electronics,… …   Wikipedia

  • Erdbodenkonstanten — grunto parametrai statusas T sritis radioelektronika atitikmenys: angl. ground constants vok. Erdbodenkonstanten, f rus. параметры почвы, m pranc. constantes de sol, f …   Radioelektronikos terminų žodynas

  • constantes de sol — grunto parametrai statusas T sritis radioelektronika atitikmenys: angl. ground constants vok. Erdbodenkonstanten, f rus. параметры почвы, m pranc. constantes de sol, f …   Radioelektronikos terminų žodynas

  • grunto parametrai — statusas T sritis radioelektronika atitikmenys: angl. ground constants vok. Erdbodenkonstanten, f rus. параметры почвы, m pranc. constantes de sol, f …   Radioelektronikos terminų žodynas

  • параметры почвы — grunto parametrai statusas T sritis radioelektronika atitikmenys: angl. ground constants vok. Erdbodenkonstanten, f rus. параметры почвы, m pranc. constantes de sol, f …   Radioelektronikos terminų žodynas

  • radioactivity — /ray dee oh ak tiv i tee/, n. Physics, Chem. the phenomenon, exhibited by and being a property of certain elements, of spontaneously emitting radiation resulting from changes in the nuclei of atoms of the element. Also called activity. [1895… …   Universalium

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”