|DCS# 5H10.30||NWU# M 5a||Location: 6 A 2|
|title: Iron Filings show Magnetic Field|
aka: over head projection of field
Bar magnet is taped, or otherwise stuck, to the bottom of a plastic tray. Iron filings are sprinkled onto the tray, and when the tray is gently tapped, the filing line up to show the field.
The temporarily magnitized iron filings line up to suggest lines of magnetic flux. Are these lines of flux a closed loop?