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
Battle of the Line Battle of the Line The Battle of the Line is a fictional battle in the "Babylon 5" fictional universe, the final battle of the Earth-Minbari war. The Battle of the Line was a desperate attempt by the Earth Alliance to stop a Minbari combat fleet from attacking Earth. Over 20,000 Human defenders fought in the battle, including most of the remaining warships of the Earth fleet. Despite this armada, the Minbari fleet easily destroyed most of the defending human warships, taking few losses themselves. Incredibly, however, the Minbari suddenly surrendered to the almost-defeated humans with no explanation. The first commander