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科学素养与生活应用·英语30篇(9)

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Why Rainbows Appear After Storms

Why Rainbows Appear After Storms

为什么雨后会出现彩虹

  1. Rainbows form when sunlight meets raindrops in the air.
  2. Each drop bends light like a tiny glass prism.
  3. Red light bends least; violet bends most.
  4. This splitting makes colors fan out in an arc.
  5. You see a rainbow only when your back faces the sun.
  6. The arc shape comes from how light reflects inside drops.
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