美不胜收！黄河壶口瀑布惊现双彩虹-快科技-科技改变生活

美不胜收！黄河壶口瀑布惊现双彩虹

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2015年11月28日 21:27
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近日，随着降温后天气放晴，晋陕大峡谷的黄河壶口瀑布出现了罕见的双彩虹奇观，与奔腾咆哮的瀑布交相辉映，真可谓：天上彩虹成双地上瀑布奔腾。

双彩虹是在水滴内进行两次反射后形成的特殊现象，在原彩虹的外围出现一条直径稍大、颜色反转的同心彩虹。内层彩虹称为主虹，外侧为红色，内侧为蓝色，颜色较亮；外层彩虹称为副虹，外侧为蓝色，内侧为红色，颜色较暗，型似发箍。

通过实验验证，双彩虹的主虹是水点内的反射造成，副虹则是两次反射形成的。

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#黄河 #瀑布 #彩虹

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