EBK 学习导读

Why Is the Sky Blue?

天空为什么是蓝色的?

Why Is the Sky Blue?

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  1. Sunlight looks white, but it’s actually made of all visible colors — each with different wavelengths, from violet (shortest) to red (longest).

  2. When sunlight enters Earth’s atmosphere, gas molecules scatter shorter wavelengths like blue and violet far more than longer ones like orange and red.

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