This activity demonstrates the magnetic field induced by a current-carrying wire. A group of compasses are arranged around the wire indicating when a magnetic field stronger than the Earth’s field is produced. ...

This activity is concerned with the magnetic field generated by a current-carrying wire. Two current-carrying wires are placed near each other as forces push them apart or pull them together. Materials needed,...

These web pages, authored and curated by David Stern, provide an introduction to the aurora and the physical mechanisms that cause it. They include details about auroral imaging, particularly from satellites, and the...

This lesson plan contains instructions for conducting an inquiry-based lab to investigate current-carrying coils in magnetic fields. Students construct a simple galvanometer from film cannisters and other...

First of several linked files, telling the early history of the compass (discovered in China) and how Robert Norman in 1581 showed the magnetic force was not horizontal but slanted downwards, followed by William...