Definition of Penumbras. Meaning of Penumbras. Synonyms of Penumbras
Here you will find one or more explanations in English for the word Penumbras.
Also in the bottom left of the page several parts of wikipedia pages related to the word Penumbras and, of course, Penumbras synonyms and on the right images related to the word Penumbras.
Definition of Penumbras
Penumbra Penumbra Pe*num"bra, n. [NL., fr. L. paene almost + umbra
shade.]
1. An incomplete or partial shadow.
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.
Note: The faint shade surrounding the dark central portion of
a solar spot is also called the penumbra, and
sometimes umbra.
3. (Paint.) The part of a picture where the shade
imperceptibly blends with the light.
penumbra Penumbra Pe*num"bra, n. [NL., fr. L. paene almost + umbra
shade.]
1. An incomplete or partial shadow.
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.
Note: The faint shade surrounding the dark central portion of
a solar spot is also called the penumbra, and
sometimes umbra.
3. (Paint.) The part of a picture where the shade
imperceptibly blends with the light.
