Dipole model of the Earth's magnetic field (MLAT), or geomagnetic latitude, formula_10 is measured northwards from the equator (analogous to geographic latitude) and is related to formula_9 by formula_12. In this case, the radial and azimuthal components of the magnetic field (the latter still in the formula_9 direction, measured from the axis of the north pole) are given by formula_14 formula_15 formula_16 where formula_17 in this case has units of Earth radii (formula_18). Invariant latitude is a parameter that describes where a particular magnetic field line touches the surface of the Earth. It is given by formula_19 or formula_20 where formula_21 is the invariant latitude and formula_22
The Devil of the Earth called Demonobirth suddenly appears. Who is he, and what will happen to the boys? The story takes an unexpected turn. The Devil of the Earth "The Devil of the Earth" is an anti-war science fiction short story depicting a giant city built under the ground as a shelter from world wars, and conspiracies over its construction. One day, in a small village, a large project to build an underground city begins under the supervision of Dr. Takano with the specific aim of preparing for nuclear war. Eiji and his brother Eizo are forced to get involved in terrible plots over