Point source

1-1-165

Source of radiation, the dimensions of which are small enough, compared with the distance between source and receptor, for them to be neglected in calculations.

Reference: C.I.E.

Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)

English

Contrast

Celsius (previously Centigrade)

Capacitance

charge current

Intensity

Illuminance

Energy

International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM