depth of the focal

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• Depth of field — The area within the depth of field appears sharp, while the areas in front of and beyond the depth of field appear blurry …   Wikipedia

• Focal length — The focal length of an optical system is a measure of how strongly it converges (focuses) or diverges (diffuses) light. A system with a shorter focal length has greater optical power than one with a long focal length. Thin lens approximation For… …   Wikipedia

• Focal mechanism — The focal mechanism of an earthquake describes the inelastic deformation in the source region that generates the seismic waves. In the case of a fault related event it refers to the orientation of the fault plane that slipped and the slip vector… …   Wikipedia

• Depth perception — is the visual ability to perceive the world in three dimensions (3D) and the distance of an object. Depth sensation is the ability to move accurately, or to respond consistently, based on the distances of objects in an environment.[citation… …   Wikipedia

• The Black Jewels — is a series of fantasy novels by Anne Bishop.The World of the Black JewelsThe Black Jewels Trilogy is set in a unique world consisting of three Realms: Terreille, Kaeleer, and Hell. These three realms, although being situated upon the same land,… …   Wikipedia

• depth of field —    The distance range between the nearest and farthest objects that appear in acceptably sharp focus in a photograph. Depth of field depends on the lens opening, the focal length of the lens, and the distance from the lens to the subject …   Forensic science glossary

• Depth of focus — For the seismology term, see Depth of focus (tectonics). Depth of focus is a lens optics concept that measures the tolerance of placement of the image plane (the film plane in a camera) in relation to the lens. In a camera, depth of focus… …   Wikipedia

• Depth map — This article is about techniques which relate to recording distances from a viewpoint. For modifying the geometry of surfaces or the illusion of this in computer graphics, see Heightmap and Bump mapping. In 3D computer graphics a depth map is an… …   Wikipedia

• The Dark Energy Survey — DES logo The Dark Energy Survey (DES) is a survey that aims to probe the dynamics of the expansion of the universe and the growth of large scale structure. The collaboration is composed of research institutes and universities from United… …   Wikipedia

• The Fabric of the Cosmos — Infobox Book name = The Fabric of the Cosmos: Space, Time, and the Texture of Reality title orig = translator = image caption = author = Brian Greene illustrator = cover artist = country = language = English series = subject = genre = Non fiction …   Wikipedia

• focal depth — noun a) The depth below the Earths surface of the hypocentre of an earthquake. b) The field of view of a camera that is in sharp focus …   Wiktionary