point source

(redirected from Optical point source)
Also found in: Dictionary, Thesaurus, Medical.
Related to Optical point source: Line Spread Function, Optical transfer function

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.
Full browser ?