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 Longest EP The Longest EP The Longest EP is a compilation album by the American punk rock band NOFX, which was released on August 17, 2010. Despite the title, it is not actually an EP; it is a compilation of songs from 1987 to 2009, plus rarities, out of print material and previously unreleased outtakes. "The Longest EP" has been referred to as a "sequel" to NOFX's 2002 compilation album "45 or 46 Songs That Weren't Good Enough to Go on Our Other Records". Upon release of "The Longest EP", "the other EP's" by NOFX will go out of print. The artwork