Darkening

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Darkening may refer to:

  • Darkening (ophthalmology), vision loss or weakness that occurs without an apparent lesion affecting the eye
  • Darkening of Valinor, the destruction of the Two Trees of Valinor in in the fictional universe of J. R. R. Tolkien's Middle-earth
  • Gravity darkening, an astronomical phenomenon
  • Hydrogen darkening, a physical degradation of the optical properties of glass
  • Limb darkening, the diminishing of intensity in the image of a star as one moves from the center to the edge

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