- the luminous flux incident on a unit area
Found on http://www.webdictionary.co.uk/definition.php?query=illuminance
This is defined as the luminous flux arriving at a surface that is perpendicular to it perunit area. The metric unit is the lumen m-2
or abbreviated to lux or lx.In the British system this was defined as the lumen ft-2
or known as the footcandle or fcExamplesSunny day10000 luxOvercast day1000 luxPrecision mechanical workshops,
Found on http://www.diracdelta.co.uk/science/source/i/l/illuminance/source.html
Is the term quantifying the illumination of, or incident light falling on a surface.
Found on http://www.rodsmith.org.uk/photographic%20glossary/rods%20photographic%20gl
<microscopy> The density of luminous flux incident on a uniformly illuminated area, measured in foot-candles (lumens per square foot) or lux (lumens per square metre). ... (05 Aug 1998) ...
Found on http://www.mondofacto.com/facts/dictionary?illuminance
the luminous flux incident on a unit area
Found on http://wordnetweb.princeton.edu/perl/webwn?s=illuminance
illuminance The amount of light, evaluated according to its capacity to produce visual stimulation, that reaches a unit of surface area during a unit of time. It is measured in lux (the SI unit of illumination, equal to one lumen per square meter). A lumen is the unit of luminous flux in the International System, equal to the amount of light given
Found on http://www.wordinfo.info/words/index/info/view_unit/2534/
In photometry, illuminance is the total luminous flux incident on a surface, per unit area. It is a measure of the intensity of the incident light, wavelength-weighted by the luminosity function to correlate with human brightness perception. Similarly, luminous emittance is the luminous flux per unit area emitted from a surface. Luminous emittance
Found on http://en.wikipedia.org/wiki/Illuminance
Is the term quantifying the illumination of, or incident light falling on a surface
Found on http://www.digitalexposure.ca/sub1.html
the luminous lux received by an elementary surface divided by the area of this surface NOTE - In the SI system of units illuminance is expressed in lux (lx) or lumens per square metre (lm/m2
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=723-08-30
quotient of the luminous flux dFv
incident on an element of the surface containing the point, by the area dA of that element Equivalent definition. Integral, taken over the hemisphere visible from the given point, of the expression Lv
• cos ? · dO where Lv
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=845-01-38
A measure of the amount of light incident on a surface; measured in foot-candles or Lux.
Found on http://www.electromn.com/glossary/i.htm
Also known as luminous flux density, the total amount of visible light falling on a point on a surface from all directions above the surface in a given time. It is equivalent to irradiance weighted with the response curve of the human eye. Illuminance is measured in lux (lx), or lumens per square me...
Found on http://www.daviddarling.info/encyclopedia/I/illuminance.html
A measure of the amount of light incident on a surface; measured in foot-candles or lux. Related category • LIGHTING TOPICS
Found on http://www.daviddarling.info/encyclopedia/I/AE_illuminance.html
illuminance: see photometry.
Found on http://www.infoplease.com/ce6/sci/A0914623.html
Term quantifying the illumination of, or incident light falling on a surface.
Found on http://www.superglossary.com/Glossary/Entertainment/Photography/
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