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Talk:Rayleigh distance

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One or more portions of this article duplicated other source(s). The material was copied from: http://personal.ee.surrey.ac.uk/Personal/D.Jefferies/aperture.html. Infringing material has been rewritten or removed and must not be restored, unless it is duly released under a compatible license. (For more information, please see "using copyrighted works from others" if you are not the copyright holder of this material, or "donating copyrighted materials" if you are.) For legal reasons, we cannot accept copyrighted text or images borrowed from other web sites or published material; such additions will be deleted. Contributors may use copyrighted publications as a source of information, but not as a source of sentences or phrases. Accordingly, the material may be rewritten, but only if it does not infringe on the copyright of the original or plagiarize from that source. Please see our guideline on non-free text for how to properly implement limited quotations of copyrighted text. Wikipedia takes copyright violations very seriously, and persistent violators will be blocked from editing. While we appreciate contributions, we must require all contributors to understand and comply with these policies. Thank you. Moonriddengirl (talk) 18:35, 15 December 2009 (UTC)[reply]

definitions

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There are two definitions here that differ by a factor of four in their magnitude, and usage varies in the community. Further sources should be found and a description added to help readers understand which one to use, where. Jandalified (talk) 11:58, 10 July 2016 (UTC) Small update - the article is now at least internally consistent - but additional sources are needed for confirmation. The updated equation describes the condition given in the text (quarter-wavelength path difference), and the value often used in antenna applications is indeed four times that. Previously a reader would have been out by a factor of four because the antenna formula was masquerading as the original formula.Jandalified (talk) 12:11, 10 July 2016 (UTC)[reply]