搜索 - 科创

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比如，中国古代就有谚语：“日晕三更雨，月晕午时风。”日月华的出现也预示着天气的变化。由藻类、烟尘甚至各种浊液造成的类似以上大气光学现象的现象更是指导着人们的工业生产。

日常语言中所称的“日晕”“月晕”大多数情况下指的就是22°晕。在中国，它每年可以出现几十乃至上百次。如果你很少见到它，多半是因为留意太阳较少，加之其有时较为微弱的缘故。

图71 低角度下的椭圆月晕图72 另一个椭圆晕图73 飞机上拍到的高品相Bottlinger环由于椭圆晕离光源很近，它很容易被淹没在太阳的强光里，所以拍摄到的椭圆晕以月晕居多。

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