| penumbra |
that portion of a shadow in semi-shade between the darkest, or umbra, and the un-shadowed zone
출처: www.landscapemodeling.org/html/glossary/glossary.h...
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| penumbra |
The penumbra is the outer, relatively light region of a sunspot shaped like an annulus (ring) surrounding the darker, cooler umbra. PENUMBRA The penumbra is the area of partial shadow (compare to umbra).
출처: www.allaboutspace.com/subjects/astronomy/glossary/...
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| penumbra |
The secondary "fringe" area of a shadow when the object only partially blocks the light.
출처: www.uni-duesseldorf.de/URZ/hardware/parallel/local...
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| penumbra |
The lighter part of a shadow that is formed by diffused light in an area around the edges of an object.
출처: home.hiwaay.net/~krcool/Astro/moon/moonpedia/
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| penumbra |
Literally "next to the umbra". (i) The shadow that results when only part of the bright object is occulted; eg an observer will see a partial eclipse when he is in the penumbra of the shadow of the moon. (ii) The lighter area surrounding a sunspot.
출처: www.astunit.com/tutorials/glossary.htm
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