File:Magnetic field of bar magnets attracting.png

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Magnetic_field_of_bar_magnets_attracting.png(704 × 451 pixels, file size: 153 KB, MIME type: image/png)

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English: Photo of the magnetic field of two bar magnets with unlike poles close together. The magnetic field is made visible in the patterns of a layer of iron filings on a piece of paper laid on top of the magnets. The iron filings are shaped like long thin needles, and orient themselves parallel to the magnetic field lines at each point. From a 1916 physics text. Alterations to image: Changed bluish background to white by adjusting brightness, converted to greyscale, cropped out caption, converted to 24 greyscale PNG.
Date
Source Downloaded August 25, 2008 from Alexander Wilmer Duff, et. al. (1916) A Textbook of Physics, P. Blakiston's Son & Co., Philadelphia, USA, p.313, fig.234a on Google Books
Author Alexander Wilmer Duff
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Public domain in the USA - published in the USA prior to 1923

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This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1924. See this page for further explanation.

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current07:15, 26 August 2008Thumbnail for version as of 07:15, 26 August 2008704 × 451 (153 KB)Chetvorno (talk | contribs)== Summary == {{Information |Description={{en|1=Photo of the magnetic field of two bar magnets with unlike poles close together. The magnetic field is made visible in the patterns of a layer of iron filings on a piece of paper laid on top of the magnets.
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