Iron filings and permanent magnets to show field on an OHP.

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(D)Electricity and Magnetism - D+30: Magnetic Fields

Iron filings and permanent magnets to show field on an OHP. Projected Images Various different magnets (bar, horseshoe, 2 bars etc.) are placed under a glass plate, on an overhead projector. Iron filings are sprinkled on top of the plate. The filings line up with the magnetic field lines , and are clearly visible when projected onto a screen.
UCB Index: 
D+30+6
PIRA Index: 
5H10.30
Demo Diagram: 
Demo Picture: 

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PIRA Taxonomy:

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D+30+8 Compass needle shows field around a high current wire on bench top.