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 and design for the album was done by the "same dude that illustrated the cover of "The Longest Line"." 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