科学馆中的奇妙自然
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彩虹的真面目

JOJO:“我操作展项时看到的是一个圆形的彩虹,为什么和你之前说的七彩桥不一样?”

彩虹:“其实我本来就是圆形的。只不过人们站在平地上,只能看到我的一部分。另一部分在地平线以下。”

JOJO: I saw a circular rainbow. Why is it different from the colorful bridge you said before?

Rainbow: In fact,I am originally circular. It’s because people stand on the ground and thus they could only see part of me. The other part is below the horizon. The essence of a rainbow is the projection of the sun. Therefore,a rainbow is actually circular like the sun.

JOJO: Then how can I see a complete rainbow?

Rainbow: You can see most of me when you stand on a mountain. If you are on a plane,you can see complete me,a circle rather than an arch.

JOJO:“那我怎么才能看到完整的你呢?”

彩虹:“当你站在高山上时就可以看到大部分的彩虹。如果在飞机上,会看见彩虹是完整的圆形,而不是拱形。”