Magnetic Viewing Film 12 in x 12 in Magnetic Field Display

Regular price: $ 38.99

Regular price: $ 38.99

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Product Description

Magnetic field viewing film...COOL!!!

From Wikipedia, the free encyclopedia

Magnetic field display viewing film is used to visualize magnetic fields. It is a translucent paper-like substance which makes magnetic fields visible. Most are made from a plastic film that contains a ferromagnetic slurry of fine nickel particles that align themselves along magnetic field lines.

Some varieties appear brighter green, while others turn darker black, when in the presence of perpendicular field lines. This enables visualization of the field strength and behavior.

The general principle of operation is that magnetizable nickel particles are suspended in a colloidal form in a gelatinous material. This allows enough freedom for the particles to align with an externally applied magnetic field - thereby displacing the colored fluid and causing a color change at the surface of the film.