The divergence of a vector field which is the resultant of radial inverse-square law fields with respect to one or more sources is everywhere proportional to the strength of the local sources, and hence zero outside sources. Newton`s law of universal gravitation follows an inverse-square law, as do the effects of electric, magnetic, light, sound,....
Found on
http://en.wikipedia.org/wiki/Inverse-square_law
The law obeyed by gravity, light intensity, electric field discharge, etc
Found on
http://jot101.com/2015/05/a-z-of-science-fiction-words/
The mathematical description of how the strength of some forces, including gravity, changes in inverse proportion to the square of the distance from the source.
Found on
http://www.braeunig.us/space/glossary.htm
(from the article `Physical Sciences`) ...of the forces of nature (the electromagnetic force and the strong and weak nuclear forces), but it had not been able to encompass the ... ...is a vector in the direction of r, the line joining 1 to 2, with magnitude 1/2 as required by the inverse square law. When is rendered in ... Recent in...
Found on
http://www.britannica.com/eb/a-z/i/35
the statement that in the absence of attenuation by matter, energy fluence rate, particle fluence rate, exposure rate, or kerma rate (of radiation) from a point source is inversely proportional to the square of the distance from the source
Found on
http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=881-02-25
Simply stated, the fact that in an un-obstructed area (like an open field) the sound pressure level will drop to half-pressure (-6 dB) every time the distance to the sound source is doubled.
Found on
http://www.encyclo.co.uk/local/20447
As applied to point sources, the intensity of radiation diminishes in proportion to the square of the distance from the source. ... (05 Mar 2000) ...
Found on
http://www.encyclo.co.uk/local/20973
the intensity of radiation is inversely proportional to the square of the distance between a point source and the irradiated surface.
Found on
http://www.encyclo.co.uk/local/21001
A law of physics that states that light from a point source fall off inversely to the square of the distance. As a example, if a light is 10 feet from your subject and you move it to 20 feet, you'll only have 1/4 the lighting intensity. If you move the light to 40 feet, it will now have only 1/16th the intensity
Found on
http://www.encyclo.co.uk/local/21048
The inverse square law correlates the relative intensity at varying distances from a point source. The relative intensity will diminish to a factor of the square root of the difference in distance. For example if at 2 meters from a source the intensity is 16 W/m
Found on
http://www.intl-lighttech.com/support/glossary
The inverse square law applies to any entity which radiates out from a point in space (see Point Source and Fluence Rate to expand on this concept). With respect to Radiation Protection , the law says if you double your distance from a source of Ionising Radiation you will reduce your exposure by 4. It follows that if you triple your distance from....
Found on
http://www.ionactive.co.uk/glossary_atoz.html?s=az&t=i
Type: Term Definitions: 1. as applied to point sources, the intensity of radiation diminishes in proportion to the square of the distance from the source.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=48201
This law suggests that the amount of radiation passing through a specific area is inversely proportional to the square of the distance of that area from the energy source. Mathematically, the Inverse Square Law is described by the equation: Intensity = I/d
2 where I is the intensity of the radiation at 1 unit distance an...
Found on
http://www.physicalgeography.net/physgeoglos/i.html
A law of physics that states that light from a point source fall off inversely to the square of the distance. As a example, if a light is 10 feet from your subject and you move it to 20 feet, you'll only have 1/4 the lighting intensity. If you move the light to 40 feet, it will now have only 1/16th the intensity.
Found on
http://www.rodsmith.org.uk/photographic%20glossary/rods%20photographic%20gl
When the strength or intensity of some quantity depends inversely on the square of the distance from the source or origin of that quantity, it is said to obey an inverse square law. For example, the strength of gravitational attraction of a body is inversely proportional to the square of the distance from that body; the intensity of a sound is ...
Found on
https://www.encyclo.co.uk/local/21221
In mathematics, the law that states that in the absence of reflective surfaces, sound pressure (or l
Found on
https://www.encyclo.co.uk/local/22369
one of several laws relating two quantities such that one quantity varies inversely as the square of the other, as the law that the illumination produced on a screen by a point source varies inversely as the square of the distance of the screen from the source.
Found on
https://www.infoplease.com/dictionary/inverse-square-law
No exact match found.
