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![]() | The contents of the Moon ring page were merged into 22° halo on 27 Dec 2012. For the contribution history and old versions of the redirected page, please see its history; for the discussion at that location, see its talk page. |
Could a knowledgeable person improve the caption of the diagram to explain the beam of light is being bent by 22 degrees? It took me a couple of readings to deduce why the phenomenon is called "22 degrees". Tempshill ( talk) 06:56, 21 April 2009 (UTC)
This is a procedural proposal on behalf of Punkdigerati, who left a comment at Talk:Moon ring stating that he believes that Moon ring duplicates 22° halo, but did not know the guidelines on merging. I personally believe that Moon ring could be merged into this article. Chris the Paleontologist ( talk • contribs) 17:45, 4 February 2012 (UTC)
The sentence "A 22° halo may be visible on as many as 100 days per year—much more frequently than rainbows" is very vague. Where is it visible 100 days a year? Some locations are almost always too cloudy while others are almost always completely clear. In some locations rainbows are visible all the time during day, such as next to waterfalls with clear skies, and I assume that some locations have rain formed rainbows more frequently than halos. 132.76.10.43 ( talk) 15:52, 27 November 2015 (UTC)
The leading photo at the top of this article appears to represent the rarer 46° halo rather than the 22°. Propose moving it to the 46° article and replacing it here with a more relevant illustration. — Preceding unsigned comment added by Wchardy ( talk • contribs) 16:42, 8 December 2017 (UTC)
In the image gallery, the sun dogs are called parhelia, but I think people would better recognize "sun dogs." Even the sun dog page itself claims that they're formerly called parhelia. Either way, using parhelia's singular (parhelion) would be a better fit for the captions. -- OneBlueGlove ( talk) 22:26, 15 May 2019 (UTC)
At the Graphics Lab Illustration Workshop (
recent diff), another editor requested creation of a 22° Halo graphic. I created the graphic shown at right, previously unaware of the existence of a 2011 graphic,
File:22 degree halo Observer looking at 22 degree halo.svg, which is already used in this article. I didn't intend to supplant a longstanding image, but if you think the new graphic is preferable then feel free to insert it, or if it can be improved then please let me know. —
RCraig09 (
talk)
20:03, 13 July 2020 (UTC)
P.S. I purposely omitted non-numeric text, so that it can be used internationally. —
RCraig09 (
talk)
20:46, 13 July 2020 (UTC)
P.P.S. I wasn't sure if the halo has the full range of rainbow colors, or if they are only red and blue. Experts, please clarify.
Does this only occur when the moon is full? If so, why? Ddnaylor ( talk) 11:32, 28 January 2021 (UTC)
Can they occur on Mars? Grassynoel ( talk) 11:05, 3 July 2021 (UTC)
In the "Formation" section, notice the sentence:
For = 1.309, the angle of minimum deviation is almost 22° (21.76°, when = 40.88°).
Where does the refractive index 1.309 come from?
Where does the angle of incidence 40.88° come from?
Mksword (
talk)
09:34, 18 March 2022 (UTC)
More specifically, the angle of minimum deviation is 21.84° on average ( = 1.31); 21.54° for red light ( = 1.306) and 22.37° for blue light ( = 1.317).