World Library  
Flag as Inappropriate
Email this Article

Magnetic field viewing film

Article Id: WHEBN0005576639
Reproduction Date:

Title: Magnetic field viewing film  
Author: World Heritage Encyclopedia
Language: English
Subject: Magnetism, Magnetic field (disambiguation), Ferrofluid, Index of physics articles (M), Magnetic field
Collection: Magnetism
Publisher: World Heritage Encyclopedia

Magnetic field viewing film

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.

Commonly available Magne-riteĀ® film is green, although a translucent pale blue variety is also available.

Magnetic viewing film is sometimes used by hobbyists and electronics enthusiasts to examine commercial products. For example, iFixIt, a site that publishes "teardowns" (or deconstructions) of new technology, used magnetic-field viewing film in its teardown of the iPad 2 Smart Cover. The film revealed the magnet array inside the cover.

See also


  1. ^

External links

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.