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 Line Line" on their demo tape "Flyswatter". All five songs were later released on "The Longest EP". The Longest Line The Longest Line is a 12" EP by the punk rock band NOFX, released in 1992. This was the first release on Fat Wreck Chords and the cover art was done by Dan Sites. The first 200 copies of this record were printed on dark-blue vinyl, some on grey vinyl, and all others on black vinyl. It was repressed in 2007 with 1,082 copies on "Peruvian" white vinyl. This coloured version sold out within a day. The band denied all suggestions