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.

Magnetism is a naturally occurring phenomena.  In most materials, the magnetic domains are randomly aligned.  However, in some cases, they are all aligned to produce a magnet.  This creates a magnetic field that extends around the object, moving from North to South.  A magnetic field can also be created from a moving charge, or current.  The right hand rule is used to visualize this field.  When a charge moves through an existing magnetic field, a magnetic force is exerted on it.  There are many examples in science and technology that utilize magnetism.

Specific Tutorial Features:
• Diagrams showing various magnetic fields.
• Illustrations showing all aspects of the right hand rule.

Series Features:
• Concept map showing inter-connections of new concepts in this tutorial and those previously introduced.
• Definition slides introduce terms as they are needed.
• Visual representation of concepts
• Animated examples—worked out step by step
• A concise summary is given at the conclusion of the tutorial.

Magnetism in nature

•           Magnetic domains
•           Ferromagnetism
•           Magnetic field diagrams

Magnetism, force and moving charge

•           Right hand rule
•           Magnetic field notation
•           Magnetic force on a current carrying wire
•           Magnetic force on a moving charged particle

Magnetism in technology

•           Mass spectrometer
•           Speakers, MRIs, and magnetic media