Magnetism

Magnetism

An attractive and repulsive phenomenon produced by a moving electric charge. Ex iron, cobalt, nickel.

Nature of magnetism

• Electrons possess a characteristic called”spin”

• certain elements have electrons that “spin” in the same direction

• the collective motion of the charged atomic particles (the e-) results in a magnetic dipole and force field

• the magnetic force field produced is perpendicular to the plane of the motion of e-

magnetic fields

the force field that exists inside and outside a magnet

magnetic field strength

• stronger magnet has more lines - greater flux density (flux line per square meter)

• measured as Tesla or Gauss.

direction of lines

• north to south outside the magnet

• south to north inside the magnet

• lines never intersect