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
Friends of the Earth (EWNI) a line-up of several headline acts from the main stage including Stornoway, Cloud Control, Giant Giant Sand, 1000 Mile Highway, and To Kill A King. The Busking Stage ran from 2012-2014 and was hugely successful. Friends of the Earth (EWNI) Friends of the Earth (EWNI) (England, Wales and Northern Ireland) is one of 70 national groups around the world which make up the Friends of the Earth network of environmental organisations. It is usually referred to just as Friends of the Earth within its home countries. Friends of the Earth Scotland operates separately, so there is no single Friends of