Place directly on surface of magnetic material to expose field
Wonderful educational tool
12" Length x 12" Width
Encased within green film are millions of magnetic particles suspended in oil. The viewing film changes shade when a magnetic field is applied. It turns dark when the field lines are perpendicular to the surface, and it turns light when the field lines are horizontal, i.e., across the surface. If a magnet is placed under the film with one of the poles facing the film, , a dark outline of the magnet will appear. The film is highly flexible and can be easily wrapped around objects.
Most Helpful Customer Reviews
Good teaching tool.
I was hoping this would work as well as I see in the pictures but it doesn't. I am using strong, medium sized neodymium magnets like those shown and have experimented with different lighting. The lighting makes a big difference but the effect is still not that impressive.
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