It is quite absurd to need to buy a big material fields the size of the earth in order to obtain a good ground (although it works well!). The brand new nearest basic approximation–an initial, thicker cable attached to the Earth–works pretty well so long as the fresh new cord is much faster than simply an excellent wavelength. Notice that We told you wavelength. Fortsett å lese Now that i’ve certain idea exactly what a ground are going to be, issue stays on what to achieve they