Northwestern Physics Demos                                 Go back to MAGNETISM 
DCS# 5H10.30NWU# 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?
pix of set up