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