46度晕

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46度晕是一种很罕见的出现在太阳附近的晕。当太阳与水平线的夹角呈15-27°时，46度晕很容易与上侧弧与下侧弧混淆。[1]

46度晕与22度晕相似，但更宽更淡。成因是阳光穿过六角形冰晶时，[2] 晶体之间90°的夹角使得其色彩分布比22度晕更为分散。[3]

File:Sun dogs and halo (24104827192).jpg
图中更大的晕圈即为46°晕，此外图中还含有22°晕、上切弧、22°幻日与幻日环。

参考文献[编辑]

  1. ↑ The 46° halo was first explained as being caused by refractions through ice crystals in 1679 by the French physicist Edmé Mariotte (1620–1684). See: Mariotte, Quatrieme Essay. De la Nature des Couleur (Paris, France: Estienne Michallet, 1681). Sun dogs as well as the 22° and 46° halos are explained in terms of refractions from ice crystals on pages 466 - 524 （页面存档备份，存于互联网档案馆）.
  2. ↑ package.lua第80行Lua错误：module 'Module:Citation/CS1/People' not found
  3. ↑ package.lua第80行Lua错误：module 'Module:Citation/CS1/People' not found (including an illustration and an animation)

外部链接[编辑]


package.lua第80行Lua错误：module 'Module:Navbar/configuration' not found

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