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
What to the Slave Is the Fourth of July? that slavery could be eliminated with the support of the church, and also with the reexamination of what the Bible was actually saying. You profess to believe, "that, of one blood, God made all nations of men to dwell on the face of all the earth," and hath commanded all men everywhere to love one another; yet you notoriously hate (and glory in your hatred) all men whose skins are not colored like your own. Douglass wants his audience to realize that they are not living up to their proclaimed beliefs. He talks about how they, being Americans, are proud