Magnetic Fields

Magnetic Fields

Magnetic Domain:

• Microscopic areas of atoms where the magnetic fields are aligned.

Ferromagnetic:

• A naturally magnetic class of materials where the magnetic domains are ordered and do not cancel out.

Magnetic Field:

• Lines showing the shape and exent of a magnetic field around a permanent magnet or a moving charged object.  To signify a field coming directly out of the plane of a page, dots are used.  To signify a field going directly into the page, an X is used.

Right Hand Rule. RHR:

1.  The fingers extend or curl in the direction of the magnetic field.
2.  The outstretched thumb points in the direction of conventional current, or the direction of a positively charged moving particle.
3.  A line perpendicular to the palm indicates the direction of the magnetic force.

Mass Spectrometer:

• A device that magnetically separates charged ions according to their mass.  A magnetic field is used to accomplish this separation.