|Search||Hot Links||What's New!|
Please let me remind all of you--this
material is copyrighted. Though partially funded by NASA, it is still a private
site. Therefore, before using our materials in any form, electronic or otherwise, you need
to ask permission.
There are two ways to browse the site: (1) use the search button above to find specific materials using keywords; or,
(2) go to specific headings like history, principles or careers at specific levels above and click on the button.
Teachers may go directly to the Teachers' Guide from the For Teachers button above or site browse as in (1) and (2).
Using a horseshoe magnet, bar magnet, or any other kind of magnet - stroke the needle (nail) from the center to one end. Reverse both needle (nail) and magnet and stroke from center to opposite end. Place needle (nail) in loop of thread and suspend from rod. (See drawing below). Needle will come to rest with one end pointing to the magnetic north.
Send all comments to firstname.lastname@example.org
© 1995-2016 ALLSTAR Network. All rights reserved worldwide.
Updated: March 12, 2004