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十万个为什么·科学阅读30篇(3)

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Why Do We See Mirages on Hot Roads?

Why Do We See Mirages on Hot Roads?

为什么炎热的路面上会出现海市蜃楼?

  1. On hot days, roads sometimes look wet or shiny.
  2. This is not real water—it’s a mirage.
  3. Hot air near the road bends light rays upward.
  4. Our eyes think the light comes from the ground.
  5. So we see a blue patch that looks like water.
  6. Mirages happen because light travels at different speeds in hot and cool air.
  7. They often appear in deserts too.
  8. It’s nature’s light trick—not magic or illusion.
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