Magnetic fields  03/05/16
The study of magnetic fields are one of the most pertinent applications to the study of physics. Magnetic fields emanate out of the “North pole” of a magnet and emanate towards the south pole of a magnet (so technically the naming of the poles of the Earth are switched around). As a consequence of Maxwell’s equations, moving charges emit electric fields, so there is always magnetism around currents. The magnetic field only has an effect on moving charged particles that are not parallel in direction to it, since the equation for magnetic force is  F=qv x B, With q being the charge v being the charge velocity and B being the magnetic field.