
Penumbra
Shadow Clarity
Penumbra refers to a shadow's blurry part, not the darkest area.
The garden was cast in a soft penumbra by the tall trees.
Light Gradients
Penumbra indicates a gradual change from light to darker shadow.
The penumbra created a gentle transition from sunlight to shade.
Eclipse Understanding
During eclipses, 'penumbra' is often mentioned to describe partial shadowing.
Observers outside the umbra will experience the eclipse in the penumbra. Compare with
AmbiguityBorderCertaintyObscurityPeripheryShadeShadowTwilight
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