A Lexicon of Cave and Karst Terminology with Special Reference to Environmental Karst Hydrology. Courtesy of the author & The Karst Waters Institute. 2002.
Point source — For other uses, see Point source (disambiguation). A point source is a single identifiable localized source of something. A point source has negligible extent, distinguishing it from other source geometries. Sources are called point sources… … Wikipedia
point source — noun a) a source of pollution, radiation, waves, fluid or other substance that has one specific location (and negligible physical extent, distinguishing a point source from other source geometries). In simulations they can often be approximated… … Wiktionary
Point source pollution — A point source of pollution is a single identifiable localized source of air, water, thermal, noise or light pollution. A point source has negligible extent, distinguishing it from other pollution source geometries. The sources are called point… … Wikipedia
Point source (disambiguation) — A point source is a localised relatively small source of something.Point source may also refer to: *Point source (pollution), a localised (small) source of pollution *Point mass, a point source of gravitational field … Wikipedia
point source — noun Date: 1903 1. a source of radiation (as light) that is concentrated at a point and considered as having no spatial extension 2. an identifiable confined source (as a smokestack or wastewater treatment plant) from which a pollutant is… … New Collegiate Dictionary
point source — Physics, Optics. a source of radiation sufficiently distant compared to its length and width that it can be considered as a point. [1900 05] * * * … Universalium
point source — In photometry, a very small source of light that is regarded as a geometric point from which light emanates in straight lines in all directions … Medical dictionary
point source pollution — pollution occurring from a discrete location such as a factory outlet … Dictionary of ichthyology
Source — may refer to:Film and television* The Source (documentary) , a 1999 documentary movie about the Beat generation * The Source (film) , a 2002 science fiction movie, also known as The Secret Craft in the UK and The Surge for its American DVD… … Wikipedia
point — 1. point [ pwɛ̃ ] n. m. • 1175 « endroit, moment »; lat. punctum « piqûre », de pungere → poindre I ♦ A ♦ Portion de l espace déterminée avec précision. 1 ♦ Endroit, lieu. En divers, en plusieurs points. « il relevait la tête et fixait son regard … Encyclopédie Universelle
Point spread function — The point spread function (PSF) describes the response of an imaging system to a point source or point object. A related but more general term for the PSF is a system s impulse response. The PSF in many contexts can be thought of as the extended… … Wikipedia
