The "?" button in the Navigation Controls Area below the green separator bar takes you to a page with a set of multiple-choice self-test questions about this topic.

The "T of C" and "Map" buttons take you to the Table of Contents page and to a "roadmap" page. They are always available for you.

The "Movie" button will start the QuickTime movie on bending magnets, which is available in the Online Demonstration section of our website.