Authors: Hamid V. Ansari
Comments: 9 Pages.
Conductive core of Earth is as hot as causing freedom of the valence electrons after which these released electrons distribute themselves toward the core surface and move along with the rotation of Earth causing that magnetic field which forms the big magnet inside Earth. This is a simple account for the geomagnetic field. By accepting this theory we also be leaded to a conclusion justifying the magnetic inversions of Earth based on the existence of several changes in axial rotation of Earth which most probably has had direct influence on expansion of polar ice on one hemisphere and a permanent day on the other hemisphere both causing extinction of species (including dinosaurs). Based on the presented discussions a practical way for direct determination of ionization energies of different elements is proposed.