Punktlichtlampef(lamp; it emits with uniform radiant intensity independent of angle); Punktlichtquellef(of light; it emits with uniform radiant intensity independent of angle); Punktquellef(Huygens-Fresnel theory); punktförmige Quelle(Huygens-Fresnel theory); Quellpunktm(Huygens-Fresnel theory)
point source Pollution from a discrete source, such as a septic tank, a sewer, a discharge type, a landfill, a factory or waste water treatment works discharging to a watercourse; stack emission from an industrial process; or spillage from an underground storage tank leaching into groundwater
