Seeing a 3D Magnetic Field


Marty Sagendorfby: Martin Sagendorf

This 3D Magnetic Field demonstration is actually quite easy to do.  It clearly illustrates that magnetic fields are not flat (as too frequently demonstrated in the classroom).

Demonstrating a 3D Magnetic Field

This easy-to-make construction requires only four components:

  1. A clear plastic bottle (about 1-3/4” in one dimension) – the one illustrated below is a 12.6 fl oz ultra concentrated Joy ® dishwashing soap bottle – Note that any bottle originally containing soap or detergent will require repeated rinses to completely remove all of its original contents.

    Seeing a 3D Magnetic Field | Educational Innovations

  2. Six 17 mm x 3 mm Neodymium ring magnets Read the rest of this entry »

Iron Filings Exploration


by:  Michelle Bertke

Simple iron filings can be used for a variety of interesting experiments and demonstrations.  Magnetism is a mysterious concept that can be difficult for students to grasp.  Magnetic fields are the forces surrounding a magnet that are identified by how they interact with adjacent magnets and other metal objects.  While magnetic fields are ‘invisible’ they can be observed by sprinkling iron filings on a white paper with magnets beneath.

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