[DOC] [TLE] Foot-candle - Wikipedia [PAR] A foot-candle is a non-SI unit of illuminance or light intensity widely used in the 
United States in photography, film, television, conservation lighting, greenhouse
... [DOC] [TLE] Lumen (unit) - Wikipedia [PAR] The lumen (symbol: lm) is the SI derived unit of luminous flux, a measure of the 
total quantity of ... The number of candelas or lumens from a source also depends 
on its ... A 23 W spiral compact fluorescent lamp emits about 1,4001,600 lm. [DOC] [TLE] Lumens, Lux and Candela - Elliott Sound Products [PAR] Luminance (L) is a measure of how bright a light source appears, and is ... The 
term 'lumens' (abbreviation lm) refers to the total light output from a source. Up 
until ... Especially since LED lighting has become popular, it's common to refer to 
the... [DOC] [TLE] Lumens, Footcandles, Candlepower, Measuring Light Output [PAR] Definition of lumens, footcandles, candlepower and measuring light output. ... 
Both were still incandescent bulbs and we got the idea that it's better to consume 
less energy. This is when .... LUX is an abbreviation for Lumens per square meter
. [DOC] [TLE] Common Electrical Terms, Abbreviations and Definitions lumen (lm ... [PAR] consumed, not a measurement of light, but we all know that a 100-watt light ... 
Technical Definition: The lumen (symbolized lm) is the International Unit of 
luminous flux. .... UV: (Ultra Violet) beyond the visible spectrum at its violet end -- 
used of... [DOC] [TLE] Lighting Terminology - Take Three Lighting [PAR] Lumen: The SI base unit of luminous flux; the amount of visible light emitted by a 
light source, without regard to direction. Abbreviated "lm". Lumens do not... [DOC] [TLE] Light Measurement Glossary | ILT [PAR] Definitions for many light measurement terms. ... In our industry the term is 
usually used with reference to UV radiation and its effects .... In photometric 
measurements the luminous power is typical expressed in lumens (lm) . ... 
Abbreviated nm. [DOC] [TLE] Candelas, Lumens and Lux By Owen Ransen [PAR] Lumens (abbreviated to lm) are the units of luminous flux. ... At its simplest the 
illumination requirements can be ... source and its visible light emitting surfaces. [DOC] [TLE] Luminaire Efficacy [PAR] LED Measurement Series: Luminaire Efficacy. Photo credit: ... for measuring the 
directional light ... for its applicability to LED-based lighting fixtures. ... wattage of 
the lamp, abbreviated lm/W. The fixture efficiency indicates the proportion of rated
... [DOC] [TLE] Light Measurements Glossary - Berryessa Designs [PAR] Light Measurements and the Human Eye Explained. Berryessa Designs ... (
lumen, or abbreviated lm) is perhaps the most fundamental measurement unit. 
This. [DOC] [TLE] Photometry - HyperPhysics [PAR] The power (flux) per unit solid angle (sometimes called pointance) is the nearest 
precise ... For visible light it is expressed in lumens per steradian = candela. ... 
The candela is abbreviated cd and its standard symbol is Iv. ... between the 
candela and lumens is 1 cd = 4 lm and the unit relationships is 1 cd = lm/sr. 
Index [DOC] [TLE] Luminous Flux - HyperPhysics [PAR] The lumen is the standard unit for the luminous flux of a light source. It is an SI 
derived ... The abbreviation is lm and the symbol is v. In terms of radiant ... Often 
times, the manufacturer will list 'initial lumens' in its data for a lamp. This is the... [DOC] [TLE] A Quick Tutorial On The Basic Terms Of Lighting ..  Premium Online ... [PAR] The short abbreviation of lumens is " lm " ... In other words, it's a measurement of 
the light color quality and basically a measurement of how light reflects off... [DOC] [TLE] Notes on LEDs [PAR] Notes on LEDs, including LED color, measurements, and use. ... (decreasing the 
beam angle) will increase its luminous intensity (brightness) ... output (luminous 
flux) of a 40-watt incandescent light bulb is about 500 lm, ... The unit of luminous 
intensity is

Question: Abbreviated lm, it's a measurement of light
Answer: Lumen