Demonstrates: Magnetic fields.

Description: A suspended magnet "floats" around other magnets on the base.

Demonstrates: Electromagnetic fields.

Description: Compasses are placed around a wire. Current is applied and needles are deflected.

Demonstrates: Closed curve in a graph of B versus H.

Description: The magnetic field intensity is first increased and then decreased causing the loop.

Demonstrates: Magnetism.

Description: This rock is a natural magnet.

Demonstrates: Zero resistance at very low temperatures.

Description: A magnet chilled in liquid nitrogen levitates in mid-air and can be spun around.