How a Compass Works
http://www.howstuffworks.com/compass.htmExplanation of how compasses work and how to make your own, from How Stuff Works.
Submitted in section: Alternative: Electromagnetism: How a Compass Works
Explanation of how compasses work and how to make your own, from How Stuff Works.
Submitted in section: Alternative: Electromagnetism: How a Compass Works