DDAFRICA-001-0123

The Magnetic Field Viewing Film is a flexible sheet coated with translucent microspheres containing tiny magnetic nickel flakes suspended in oil, which align along the field lines when a magnetic field is present.

Light reflected from the aligned flakes reveals the direction of the magnetic field across the sheet. One example is to wrap the film around a copper tube and watch the progress of a neodymium magnet as it slowly descends through the tube. The film is also used for quality control, product demonstration and reverse engineering, as well as in education.

Key Features

• Flexible sheet that shows the direction of magnetic field lines
• Translucent microspheres containing nickel flakes suspended in oil
• Flake alignment made visible by reflected light
• Laminated film: more durable and less easy to damage, suited to student use
• Non-laminated raw film: can be cut to any size or shape and wrapped around objects
• Shows complex pole geometry close to the poles; needs fairly strong fields