point source


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Related to point source: Nonpoint source

point source

A celestial object whose angular extent is too small to be measured.

point source

[′pȯint ‚sȯrs]
(civil engineering)
A municipal or industrial wastewater discharge through a discrete pipe or channel.
(physics)
A source of radiation having definite position but no extension in space; this is an ideal which is a good approximation for distances from the source sufficiently large compared to the dimensions of the source.

point source

A light source whose dimensions are insignificant compared with the distance at which it is used; e.g., a fluorescent lamp is a point source when viewed from a large distance but a line source when viewed close to the source.
References in periodicals archive ?
Point sources can contract under the Act to purchase credits directly as well as invest in projects.
The point source encapsulation was described in reference (17).
regulations when a point source of those pollutants is identifiable and
Meanwhile, the emergence of new nonattainment areas puts a spotlight on point sources, or identifiable sources of concentrated emissions, which--in the EPA's view--account for the dominant share of lead air risks in the United States today.
Rendering terrain with this model adds details not present with renderings from a point source illumination model.
If the pesticide--toxic by definition--got into the stream, didn't the spray nozzle on the helicopter count as a point source of pollution, just like a factory pipe?
their addition from a point source into a navigable body of water,
We believe this will become our show-and-tell project for potential customers to demonstrate how point source pollution can be reduced and non-point source pollution can be addressed," he says.
EPA's TMDL proposed rule change would have reversed the 27-year determination under the Clean Water Act and changed forest activities from a non-point source to a point source.
The steep epidemic curve expected in a bioterrorism attack is similar to what would be seen with other point source exposures, such as foodborne outbreaks.