Encyclopedia > Ground constants

Article Content

Ground constants

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

Note 1: The values of these parameters vary with the local chemical composition and density of the earth.

Note 2: For a propagating electromagnetic wave, such as a surface wave propagating along the surface of the Earth, these parameters vary with frequency and direction.

Source: from Federal Standard 1037C and from MIL-STD-188

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia

Search over one million articles, find something about almost anything!

Featured Article

Great River, New York

... 100 females there are 104.2 males. For every 100 females age 18 and over, there are 97.8 males. The median income for a household in the town is $78,399, and the median ...