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Point source pollution
http://en.wikipedia.org/wiki/Point_source_pollution
From Wikipedia, the free encyclopedia
A point source of pollution is a single identifiable source of air, water, thermal, noiseor light pollution. A point source has negligible extent, distinguishing it from other pollution source geometries. The sources are called point sources because in mathematical modeling, they can be approximated as a mathematical point to simplify analysis. Pollution point sources are identical to other physics, engineering, optics, andchemistry point sources and include:
- Air pollutionfrom an industrial source, rather than an airport or a road, considered a line source or a forest fire which is considered an area source, or volume source.
- Water pollutionfrom an oil refinery wastewater discharge outlet[1]
- Noise pollutionfrom a jet engine
- Disruptive seismicvibration from a localized seismic study
- Light pollutionfrom an intrusive street light
- Thermal pollutionfrom an industrial process outfall
- Radioemissions from an interference-producing electrical device