Magnetic field viewing film

The topic of this article may not meet Wikipedia's general notability guideline. Please help to demonstrate the notability of the topic by citing reliable secondary sources that are independent of the topic and provide significant coverage of it beyond a mere trivial mention. If notability cannot be shown, the article is likely to be merged, redirected, or deleted. Find sources: "Magnetic field viewing film" – news · newspapers · books · scholar · JSTOR (August 2018) (Learn how and when to remove this template message)

Magnetic field viewing film is used to show stationary or (less often) slowly changing magnetic fields; it shows their location and direction. It is a translucent thin flexible sheet, coated with micro-capsules containing nickel flakes suspended in oil.^[1] When magnetic lines of force are parallel to the surface of the carrier sheet, the surfaces of the flakes are reflective, and appear bright. When lines of force are perpendicular to the sheet, the flakes are edge-on, and appear significantly darker. When the film is placed on a magnet's pole, the latter case applies.

Magnetic field viewing film together with a ruler can be used to measure the poles per inch of a magnet.

See also[edit]

• Ferrofluid
• Magna Doodle

References[edit]

External links[edit]

Wikimedia Commons has media related to Magnetic field viewing film.

This electromagnetism-related article is a stub. You can help Wikipedia by expanding it.

• v
• t
• e