definition of lux
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Definitions &Translations Freebase(0.00 / 0 votes)Rate this definition: Lux. The lux is the SI unit of illuminance and luminous emittance, measuring luminous flux per unit area. It is equal to one lumen per square metre. In photometry, this is used as a measure of the intensity, as perceived by the human eye, of light that hits or passes through a surface.
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Lumen (unit) The difference between the lux and the lumen is that the lux takes into account the area over which the luminous flux is spread. 1000 lumens, concentrated into an area of one square metre, lights up that square metre with an illuminance of 1000 lux.
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Lux For monochromatic light of this wavelength, the amount of illuminance for a given amount of irradiance is maximum: 683.002 lux per W/m 2; the irradiance needed to make one lux at this wavelength is about 1.464 mW /m 2. Other wavelengths of visible light produce fewer lux per watt-per-meter-squared.
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lux (lx) The lux (symbolized lx) is the unit of illuminance in the International System of Units ( SI ). It is defined in terms of lumen s per meter squared (lm/m 2 ). Reduced to SI base units, one lux is equal to 0.00146 kilogram per second cubed (1.46 x 10 -3 kg / s 3 ).
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Lumen (unit) The difference between the units lumen and lux is that the lux takes into account the area over which the luminous flux is spread. A flux of 1000 lumens, concentrated into an area of one square metre, lights up that square metre with an illuminance of 1000 lux.or other uses, see Lumen (disambiguation) . The lumen (symbol: lm) is the SI derived unit of luminous flux, a measure of the total amount of visible light emitted by a source.
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- The Difference Between Lumens and Lux. Lux is a measure of how many lumens are present in a given area. It's essentially a measure of photon density or light concentration.. A denser cloud of photons means there are more lumens present in a space--producing more brightness and higher lux.
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Measuring Light Levels Illuminance = Light Falling on a Surface. The amount of light falling on a surface is illuminance, and is measured in lux (metric unit = lumen/m 2) or foot-candles (English unit = lumen/ft 2).1 footcandle equals 10.8 lux.he brightness of light can mean different things: for example, the amount of light coming from a light source is luminous flux (lumens), the amount of light falling on a surface is illuminance (lux), and the amount of light reflected off a surface is luminance (cd/m2).
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Letter From The Editor: What is Luxury? How is its Definition Changing? Definition of luxury. plural. luxuries. 1 : a condition of abundance or great ease and comfort : sumptuous environment lived in luxury.
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lux lux-Computer Definition. A unit of measurement of the light intensity on a surface area. Lux differs from lumens.. The lux rating will decrease the farther away it is measured from the light source, but the lumen rating will remain the same.One lux is equal to the illumination of a surface one meter away from a single candle; technically, one lumen per square meter.Whereas a lumen measures light intensity in all directions from a light source, lux measures the intensity in a specific location from the source. See lumen and candela.1  Link/Cite.2  Home.ne lux is equal to the illumination of a surface one meter away from a single candle; technically, one lumen per square meter. Whereas a lumen measures light intensity in all directions from a light source, lux measures the intensity in a specific location from the source. See lumen and candela. 1  Link/Cite. 2  Home.
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How to convert lumens to lux The illuminance E v in lux (lx) is equal to 10.76391 times the luminous flux φ V in lumens (lm) divided by the surface area A in square feet (ft 2): E v(lx) = 10.76391 × φ V(lm) / A (ft 2). For a spherical light source, the area A is equal to 4 times pi times the squared sphere radius:
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Definitions &Translations Noun. 1. daytime-the time after sunrise and before sunset while it is light outside; the dawn turned night into day; it is easier to make the repairs in the daytime. daylight, day.
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Lumen (unit) The difference between the units lumen and lux is that the lux takes into account the area over which the luminous flux is spread. A flux of 1000 lumens, concentrated into an area of one square metre, lights up that square metre with an illuminance of 1000 lux.The same 1000 lumens, spread out over ten square metres, produces a dimmer illuminance of only 100 lux. Mathematically, 1 lx = 1 lm/m2.he difference between the units lumen and lux is that the lux takes into account the area over which the luminous flux is spread. A flux of 1000 lumens, concentrated into an area of one square metre, lights up that square metre with an illuminance of 1000 lux.
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- moodboard/Mike Watson Images/Brand X Pictures/Getty Images. In 2008, the median salary for Web Designers was $65,270 and $50,725 for a Level 1 Web Designer according to Salary.com. According to the U.S. Bureau of Labor Statistics, Graphic Designers made an average $60,120 per year.But the BLS doesn't have a specific listing for Web designers.oodboard/Mike Watson Images/Brand X Pictures/Getty Images. In 2008, the median salary for Web Designers was $65,270 and $50,725 for a Level 1 Web Designer according to Salary.com. According to the U.S. Bureau of Labor Statistics, Graphic Designers made an average $60,120 per year.
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- Definition of LUMEN. 1. 2. : the bore of a tube (as of a hollow needle or catheter). 3. : a unit of luminous flux equal to the light emitted in a unit solid angle by a uniform point source of one candle intensity.
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Lumen vs. Lux vs. Watt â What is the difference? Simply put, lux is different from lumens because lux takes into account the actual area of which the lumens are spread, while lumens simply represent the total quantity of light produced by a light source. Read more here.
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Difference Between Lux and Lumen Lumen is the SI unit of the luminous flux, which is a measure of the total amount of visible light emitted by a source. It is the perceived power of the light from a source.umen and Lux are two photometric units in the SI system of units. They are closely related to each other and, in simple language, measure how bright a light source appears in two different contexts. These measurements are important in light sources and other cases where the intensity of the light plays a role.
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Lux A flux of 1000 lumens, concentrated into an area of one square metre, lights up that square metre with an illuminance of 1000 lux. However, the same 1000 lumens, spread out over ten square metres, produces a dimmer illuminance of only 100 lux. Achieving an illuminance of 500 lux might be possible in a home kitchen with a single fluorescent light fixture with an output of 7004120000000000000♠12000 lumens.
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daylight Definition of daylight for English Language Learners. : 1  the light of the sun and sky during the day : the natural light of day. : 2  the time of day when the sky is light. : 3  the time of day when sunlight first begins to appear.
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Lux Products Lux Products. For other uses, see Lux (disambiguation). LUX is a privately held company based in Philadelphia, Pennsylvania, with a research & development center in Hong Kong, manufacturing in Asia and packaging and distribution plant in Laredo, Texas.
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- Definition of jewel in the crown : something that is the most valuable, important, or admired among others of its kind He owns several successful businesses but this company is the jewel in the crown.
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night Definition of night. 1 : the time from dusk to dawn when no sunlight is visible The store is open all night. 2a : an evening or night taken as an occasion or point of time the opening nightb : an evening set aside for a particular purpose Thursdays is game night in our house.
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Convert Lux to Lumens Per Square Meter Lux is the basic unit of illuminance in the International System of Units (SI). Lux measures the amount of luminous flux per unit area. Lux (lx) is defined as one lumen per square meter (lm/m2). 1 lx = 1 lm/mm2. 1 Lumen per Square Meter: Lumen per square meter is equal to Lux (SI unit). A measurement of the number of Lumens falling on an area of one square meter, the definition of Lux. 1 lm/m2 = 1 lx. http://www.kylesconverter.com/illuminance/lux-to-lumens-per-square-meter. Lux to Lumens per Square Meter.
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Difference Between Lux and Lumen Lumen vs Lux. • Lumen is the measure of the luminous flux and is defined as the luminous flux from a light source of one candela through a solid angle of 1 steradian. • Lux is the measure of the illuminance and is defined as the number of lumens per square meter. • Lumen measures the amount of light (photon output) from light sources weighted by the luminous function, to account for the sensitivity of the human eye. • Lux measure how bright a light appears.
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jewel in the crown Definition of jewel in the crown. : something that is the most valuable, important, or admired among others of its kind He owns several successful businesses but this company is the jewel in the crown.
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About Thomas Lux: A Profile Lux is a tire manufacturer's dream and a frequent flier club's nightmare. Of course, it wasn't always this way. Born in Northampton, Massachusetts, in 1946, he spent most of his childhood living on a small family dairy farm. His grandfather and uncle were farmers, and his father was the milkman.
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Measuring Light Levels The brightness of light can mean different things: for example, the amount of light coming from a light source is luminous flux (lumens), the amount of light falling on a surface is illuminance (lux), and the amount of light reflected off a surface is luminance (cd/m2).