
1) Experimental physic
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https://www.crosswordclues.com/clue/point-source

A point source is a single identifiable localised source of something. A point source has negligible extent, distinguishing it from other source geometries. Sources are called point sources because in mathematical modeling, these sources can usually be approximated as a mathematical point to simplify analysis. The actual source need not be physica...
Found on
http://en.wikipedia.org/wiki/Point_source
[radio] UserboxCategory:WikiProject Sharks users ...
Found on
http://en.wikipedia.org/wiki/Point_source_(radio)

Single
emission source in a defined location.
Found on
http://sis.nlm.nih.gov/enviro/iupacglossary/glossaryp.html

A source whose angular extent is so small that it cannot be measured with existing equipment. Compare with extended source.
Found on
http://www.daviddarling.info/encyclopedia/P/point_source.html

source of radiation the dimensions of which are small enough, compared with the distance between the source and the irradiated surface, for them to be neglected in calculations and measurements NOTE - A point source which emits uniformly in all directions is called an isotropic point source or uniform point source.
Found on
http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=845-01-19

A design in speaker systems, where separate speakers (reproducing different frequency ranges) are made so that the sound appears to come from one place.
Found on
http://www.encyclo.co.uk/local/20447

In photometry, a very small source of light which is regarded as a geometrical point from which light emanates in straight lines in all directions. ... (05 Mar 2000) ...
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http://www.encyclo.co.uk/local/20973

A stationary location or fixed facility from which pollutants are discharged; any single identifiable source of pollution; e.g. a pipe, ditch, ship, ore pit, factory smokestack.
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http://www.encyclo.co.uk/local/21292

A stationary location or fixed facility from which pollutants are discharged; any single identifiable source of pollution; e.g. a pipe, ditch, ship, ore pit, factory smokestack.
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http://www.encyclo.co.uk/visitor-contributions.php

A single identifiable source that discharges pollutants into the environment. Examples are smokestack, sewer, ditch, or pipe. See non-point source.
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http://www.encyclo.co.uk/visitor-contributions.php

A point source describes a source of Ionising Radiation which can physically be represented by a point in space. Where as this is usually impossible in reality, commonly the point source is used to estimate radiation exposure since the mathematics lends itself well to 'back of envelope' calculations. The point source is related to fluence and math....
Found on
http://www.ionactive.co.uk/glossary_atoz.html?s=az&t=p

Type: Term Pronunciation: poynt sōrs Definitions: 1. In photometry, a small source of light that is regarded as a geometric point from which light emanates in straight lines in all directions.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=70633

[
n] - a spatially constricted by concentrated source (especially of radiation or pollution)
Found on
http://www.webdictionary.co.uk/definition.php?query=point%20source

A stationary location or fixed facility from which pollutants are discharged; any single identifiable source of pollution; e.g. a pipe, ditch, ship, ore pit, factory smokestack.
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https://www.encyclo.co.uk/local/20094
noun a spatially constricted by concentrated source (especially of radiation or pollution)
Found on
https://www.encyclo.co.uk/local/20974
No exact match found.