十万个为什么·科学阅读30篇(5)
6 / 30
正在确认阅读权限…
How Do Rainbows Form?
彩虹是怎么形成的?
-
Rainbows appear when sunlight meets raindrops in the air.彩虹出现在阳光与空气中的雨滴相遇时。
-
Light bends as it enters each raindrop.光线进入每颗雨滴时发生弯曲。
-
It splits into red, orange, yellow, green, blue, indigo, and violet.它被分解为红、橙、黄、绿、蓝、靛、紫七种颜色。
-
The light bounces off the back of the drop.光线在雨滴内壁反射。
-
Then it bends again as it exits the drop.随后离开雨滴时再次弯曲。
-
Each color bends a little differently, so they spread out.每种颜色弯曲程度略有不同,因而散开。
-
You must stand with your back to the sun to see one.要看到彩虹,你必须背对太阳站立。
-
No two people ever see the exact same rainbow.没有任何两个人能看到完全相同的彩虹。