Bilingual edition: English is preserved and Chinese follows each unit. Terminology uses the confirmed v20260916 glossary; automated semantic review remains traceable.
中英双语版:英文原文完整保留,中文紧随对应单元;术语采用 v20260916 确认表,自动语义审校结果可追溯。

Primary and Secondary Rainbows

初级和次级彩虹

The rainbow is caused by refraction and reflection in falling water droplets.

彩虹是由雨滴中的折射和反射造成的。
Show rainbow features
显示彩虹特征
Index

Rainbow concepts

Atmospheric optics concepts
索引 彩虹概念 大气光学概念
 
HyperPhysics***** Light and Vision
HyperPhysics ***** 光与视觉
R Nave
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