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
Famous quotes containing the word darkening:
“And crossed the dark defile at last, and found
At Roncevaux upon the darkening plain
The dead against the dead and on the silent ground
The silent slain—”
—Archibald MacLeish (1892–1982)
“One man walking a deserted platform;
Dawn coming, and rain
Driving across a darkening autumn....”
—Philip Larkin (1922–1986)
“O love, my love! if I no more should see
Thyself, nor on the earth the shadow of thee,
Nor image of thine eyes in any spring,—
How then should sound upon Life’s darkening slope
The ground-whirl of the perished leaves of Hope,
The wind of Death’s imperishable wing?”
—Dante Gabriel Rossetti (1828–1882)