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Hasil cari dari kata atau frase: Penumbra (0.02062 detik)
Found 2 items, similar to Penumbra.
English → English (WordNet)
Definition: penumbra
penumbra
n : a fringe region of partial shadow around an umbra
[also:
penumbrae (pl)]
English → English (gcide)
Definition: Penumbra
Penumbra
\Pe*num"bra\, n. [NL., fr. L. paene almost + umbra
shade.]
1. An incomplete or partial shadow.
[1913 Webster]
2. (Astron.) The shadow cast, in an eclipse, where the light
is partly, but not wholly, cut off by the intervening
body; the space of partial illumination between the umbra,
or perfect shadow, on all sides, and the full light. --Sir
I. Newton.
[1913 Webster]
Note: The faint shade surrounding the dark central portion of
a solar spot is also called the
penumbra, and
sometimes
umbra.
[1913 Webster]
3. (Paint.) The part of a picture where the shade
imperceptibly blends with the light.
[1913 Webster]
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