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Ground constants : ウィキペディア英語版 | 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. ==See also==
*Ground
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Ground constants」の詳細全文を読む
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