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Why Do Some Rocks Glow Under Ultraviolet Light?

Why Do Some Rocks Glow Under Ultraviolet Light?

为什么有些岩石在紫外线下会发光?

  1. Some rocks glow with bright colors under ultraviolet light.
  2. This glow is called fluorescence and happens in certain minerals.
  3. Ultraviolet light has energy that makes electrons jump higher.
  4. When electrons fall back, they release visible light we can see.
  5. Fluorescent minerals include fluorite, calcite, and willemite.
  6. Not all rocks do this — only those with special chemical structures.
  7. Scientists use UV lamps to find valuable minerals underground.
  8. This natural effect helps geologists explore Earth's hidden layers.
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