point source

Thân thiện

A single factory smokestack is a classic point source of air pollution.

Definition

1. Noun:
   • A concentrated source (especially of radiation or pollution) that is spatially constricted: A "point source" is a single, identifiable, localized origin of something, typically emissions, pollution, or energy. It contrasts with a diffuse or non-point source spread over a larger area.

Usage

• The term is primarily used in scientific, environmental, and engineering contexts to describe and regulate origins of emissions.
• It is often modified by the type of emission, e.g., "point source of light," "point source pollution."
• It functions as a countable noun.

Examples

• Noun:
  • The factory's smokestack is a major point source of air pollution.
  • In optics, a laser can be treated as a perfect point source of light.
  • Environmental regulations are stricter for point source discharges into the river.

Advanced Usage

• "Point source pollution": A specific, identifiable source of pollution, such as a pipe or drain.
  • The cleanup focused on reducing point source pollution from industrial sites.
• In mathematics and physics, a "point source" is an idealized concept of a source originating from a single point in space.

Variants and Related Words

• Non-point source (NPS) (n): A source of pollution that is diffuse and not originating from a single, discrete outlet, such as agricultural runoff.
  • Controlling non-point source pollution is often more challenging than regulating point sources.

Synonyms

• Localized source: A source confined to a specific place.
• Discrete source: A distinct and separate source.

Antonyms

• Non-point source: A diffuse source.
• Distributed source: A source spread out over an area.

Học thuật

Noun

1. a concentrated source (especially of radiation or pollution) that is spatially constricted