SOGO論壇

標題: 彩虹 [列印本頁]

作者: goodperson 時間: 2016-4-18 21:57:19 標題: 彩虹

本帖最後由 goodperson 於 2016-4-18 22:04 編輯

彩虹是氣象中的一種光學現象，當太陽光照射到半空中的水滴，
光線被折射及反射，在天空上形成拱形的七彩的光譜，
彩虹的七彩顏色究竟是哪七種有不同的說法。
東亞、中國對於七色光來說最普遍的說法是（從外至內）：
紅、橙、黃、綠、藍、靛、紫。
事實上彩虹有數百萬種顏色，比如，在紅色和橙色之間還有許多種細微差別的顏色，
但為了簡便起見，所以只用七種顏色作為區別。

彩虹雖不是什麼特殊奇觀，對都市人來，彩虹是難得一見的。你我有多久沒看過彩虹了? 現在讓我們一次看個夠!

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小時候雨後的天空常常可以看到彩虹, 現在住在都市叢林的小孩恐怕是難得一見!

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