You are buying one 12 inch x 12 inch sheet of Magnetic Field Viewer Film.
Encased within the green film are millions of magnetic particles suspended in oil. A magnet will attract the particles to the areas where the magnet is the strongest - at its poles. The poles appear dark green...
You are buying one 6 inch x 6 inch sheet of Magnetic Field Viewer Film.
Encased within the green film are millions of magnetic particles suspended in oil. A magnet will attract the particles to the areas where the magnet is the strongest - at its poles. The poles appear dark green. ...
Iron filings in sealed hard plastic. No mess. No fuss. Re-use it again and again. The case measures 3 5/8" long x 2 5/8" wide x 1/4" thick. A great teaching tool, and just simply fun to play with!
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