A
point source of pollution is a single identifiable source of
air,
Water pollution,
thermal,
noise or
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, and
chemistry point sources and include: