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Magnetic field viewing film

From Wikipedia, the free encyclopedia

Magnetic viewing film showing magnetic poles of a refrigerator magnet. The poles are dark, and pole edges are bright.

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.

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  • How Magnet Works - The FORCE of Nature | A Documentary Film

Transcription

See also

References

  1. ^ Vincent A. Ardizzone (January 14, 2004). "VIEWING FILM FOR DC MAGNETIC FIELDS - A DISCUSSION". Archived from the original on 2004-01-14.

External links

Wikimedia Commons has media related to Magnetic field viewing film.


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This page was last edited on 15 August 2022, at 06:48
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