Generating Electricity From Earth S Magnetic Field

Generating power from earth s magnetic field would be ridiculously impractical near the surface.

Generating electricity from earth s magnetic field. Morgan the oil king would have none of it and would not. Consider for a sense of scale the energy density in the magnetic field near the earth s surface. The earth s magnetic field is quite homogeneous over short distances though so the coil would need to move fast and very far to generate much. A system for generating electricity from the geomagnetic field and rotation of the earth is presented.

The other option is to move the inductor in the magnetic field. A changing magnetic field does. We are always in the earth s magnetic field which is generated at the earth s core. Tapping into earth s rotation.

The earth rotates through the geomagnetic field to form a potential difference between first and second terrestrial charged bodies. Nicola tesla powered an electric car without the use of a battery drawing power apparently from the earth s electro magnetic field. Although the earth s magnetic field is not aligned exactly with the planet s rotation axis there is a component of the field that is symmetric about this axis. This magnetic field makes compasses work and is also used by pigeons and fish to navigate.

A proposed device interacting with this component would extract energy from the earth s rotation to produce electric power. The field is 5 gauss which means an energy density of 0 001 j m 3. The rotation of earth on its axis causes these electric currents to form a magnetic field which. On earth flowing of liquid metal in the outer core of the planet generates electric currents.

The earth s magnetic field does change a tiny bit but not enough to really generate much. The image below shows the range of frequencies for different forms of electromagnetic radiation found in the electromagnetic spectrum. The first and second charged bodies are spaced apart in a direction substantially normal to the earth s surface.