penumbra

   A partial shadow between regions of complete shadow and complete illumination. From the word umbra, which means shadow. The penumbra on the cyan sphere you see here is located in two areas: between the brightest and the darkest areas, and also to the lower left of the darkest shadow. This latter area is the least obvious aspect to the shadowing on this sphere, because its presence is counter-intuitive, but when rendered, adds to the illusion of the sphere's three-dimensionality. (pr. pe-num'brah)

Glossary of Art Terms. 2014.

Look at other dictionaries:

  • penumbra — pe·num·bra /pi nəm brə/ n pl bras 1: an area within which distinction or resolution is difficult or uncertain the public private penumbra 2: an extension of protection, reach, application, or consideration; esp: a body of rights held to be… …   Law dictionary

  • Penumbra — Saltar a navegación, búsqueda Para otros usos de este término, véase Penumbra (desambiguación). Umbra, penumbra, y antumbra La umbra (en latín: sombra ) es la parte más oscura de una …   Wikipedia Español

  • penumbră — PENÚMBRĂ, penumbre, s.f. 1. Zonă incomplet luminată, cuprinsă între zona umbrită şi cea luminoasă din spatele unui corp opac; p. gener, zonă slab luminată; semiobscuritate. 2. (pict.) Zonă de trecere între lumină şi umbră. – Din fr. pénombre. cf …   Dicționar Român

  • Penumbra — (lat. „Halbschatten“) bezeichnet: Penumbra (Astronomie), Gebiete innerhalb von Sonnenflecken, die dunkler als die restliche Sonnenoberfläche sind vereinzelt auch den Halbschatten bei einer Mondfinsternis Penumbra (Medizin), die bei einem… …   Deutsch Wikipedia

  • penumbra — sustantivo femenino 1. (no contable) Sombra débil entre la luz y la oscuridad: La habitación estaba en penumbra. Al entrar, en la penumbra del pub no se veía nada. 2. (no contable) Área: astronomía En los eclipses, zona parcialmente iluminada… …   Diccionario Salamanca de la Lengua Española

  • 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… …   The Collaborative International Dictionary of English

  • penumbra — 1660s, from Mod.L. penumbra partial shadow outside the complete shadow of an eclipse, coined 1604 by Kepler from L. pæne almost + umbra shadow (see UMBRAGE (Cf. umbrage)) …   Etymology dictionary

  • penumbra — s. f. 1.  [Física] Estado de uma superfície incompletamente iluminada por um corpo luminoso cujos raios são em parte interceptados por um corpo opaco. 2.  [Por extensão] Meia luz. 3.  [Belas Artes] Ponto de transição da luz para a sombra.… …   Dicionário da Língua Portuguesa

  • Penumbra — Penumbra, der Halbschatten, der die meisten Sonnenflecke umgibt (s. Sonne) …   Meyers Großes Konversations-Lexikon

  • Penumbra — (lat.), s. Sonnenflecke …   Kleines Konversations-Lexikon

  • penumbra — umbra, adumbration, umbrage, *shade, shadow …   New Dictionary of Synonyms


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