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Lux meter is a term sometimes used to refer to a light meter. If you mean who invented the light meter, Weston marketed the first photographic selenium meter in 1932, which was not well received. Dr. Bruno Lange is also credited with inventing a much more practical version in 1933 and started a company that year. I believe both of these versions were exposure meters and not designed to simply measure illumination. The meter has gone through various improvements for which patents have been granted for, thus there is more than one inventor of a light meter (Joseph Hostetter applied for a patent for a type of light meter in 1974).
Lux is the metric version of the Imperial measurement called foot candle, which is based on the level of visible light at a point that is one foot away from one candle and spread out over one square foot. Although lux was a known quantity much earlier than the invention of the meter, would not be until the use of modern materials made light measurement possible using electronic means.
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Which is best 1.5 lux or 3 lux camera?
1.5 lux is better then 3 lux camera because 1.5 Lux camera can work in more dark area then 3 lux
Definition of lux in cctv camera?
In plane english it means light. Lower the lux number camera can show image
What is unit of illumination?
Light intensities are usually measured in candle power. What that means is the equivalent of the light of one candle, measured at a distance of one foot, sometimes called, `foot candles' or `candellas'. +++ In the SI system the flux or "amount" of light, is measured in lumen; and the illuminence or brightness of the light, on a surface in lumens per square metre, a compound unit called the lux.
What is the illuminance required in reading room in terms of LUX?
the reading room required illuminance around 500.
What can you do with a half meter of cotton fabric?
The same thing you can do with a meter
What does LUX stand for?
The lux is the SI unit of illuminance, and is equal to 1 lumen per square meter.
What would you use to measure the brightness of a light bulb?
A lux or lumens meter or in terms of mesurements lux or lumens
Instrument used by umpire in cricket to measure light intensity?
lux meter or light meter
What is the device that measured Surface brightness?
A lux meter is a device that measures surface brightness.
How light is invented?
Dixitque Deus: Fiat lux. Et facta est lux . . which means it was not invented, it just happened. But in the 1860s it was shown to be a form of electromagnetic radiation by James Clerk Maxwell.
How many lux are there in an area of 25 square meter?
On a very dark night, nearly none.
What do you use to measure light?
there is an instrument called lux meter. i believe that it works with a complex electronics circuitry using light sensitive devices. it directly gives the reading in lux.
Who invented meter stick?
get a boner a meter long
Who invented the first light meter?
who envented light meter
Who invented the electric meter?
Edward Weston, in 18888, invented portable DC voltmeter
How do you calculate a lux level in a room?
Light Level or Illuminance, is the total luminous flux incident on a surface, per unit area. The work plane is where the most important tasks in the room or space are performed.Measuring Units Light Level - IlluminanceIllumenance is measured in foot candles (ftcd, fc, fcd) (or lux in the metric SI system). A foot candle is actually one lumen of light density per square foot, one lux is one lumen per square meter. 1 lux = 0.0929 foot candle = 1 lumen /sq meter = 0.0001 phot1 ftcd = 1 lux / 10.7521 lumen/sq ft = 1 foot candle = 1x104 lux = 1 phot
When was spl meter invented?
1999
