Lux
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| - | !''' | + | !'''[[Illuminance]]'''!!Example |
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| |10<sup>-5</sup> lux ||Light from the brightest star '''[[Sirius]]''' | |10<sup>-5</sup> lux ||Light from the brightest star '''[[Sirius]]''' | ||
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| - | == Also See == | + | == '''Also See''' == |
| *'''[[Sunlight]]''' | *'''[[Sunlight]]''' | ||
| *'''[[Lighting Installation]]''' | *'''[[Lighting Installation]]''' | ||
| *'''[[Daylight]]''' | *'''[[Daylight]]''' | ||
| *'''[[Moonlight]]''' | *'''[[Moonlight]]''' | ||
| + | *'''[[Sunlight]]''' | ||
| + | *'''[[Lighting Installation]]''' | ||
| + | *'''[[Daylight]]''' | ||
| + | *'''[[Lux]]''' | ||
| + | *'''[[Metal Halide lamp]]''' | ||
| + | *'''[[Albedo]]''' | ||
| + | *'''[[Metal Halide lamp]]''' | ||
| + | *'''[[Color Temperature]]''' | ||
| + | *'''[[LED]]''' | ||
| - | + | == '''Reference''' == | |
| - | + | ||
| - | == Reference == | + | |
| * Wikipedia Reference see '''''Lux''''' [http://en.wikipedia.org/wiki/Lux] | * Wikipedia Reference see '''''Lux''''' [http://en.wikipedia.org/wiki/Lux] | ||
Current revision
A lux meter for measuring illuminances in work places. The lux (symbol: lx) is the SI unit of illuminance and luminous emittance. It is used in photometry as a measure of the apparent intensity of light hitting or passing through a surface. It is analogous to the radiometric unit watts per square meter, but with the power at each wavelength weighted according to the luminosity function, a standardized model of human brightness perception.
| Illuminance | Example |
|---|---|
| 10-5 lux | Light from the brightest star Sirius |
| 10-4 lux | Total starlight, overcast sky |
| 0.002 lux | Moonless clear night sky with airglow |
| 0.01 lux | Quarter moon |
| 0.27 lux | Full moon on a clear night |
| 1 lux | Full moon overhead at tropical latitudes |
| 3.4 lux | Dark limit of civil twilight under a clear sky |
| 50 lux | Family living room |
| 80 lux | Hallway/toilet |
| 100 lux | Very dark overcast day |
| 320 lux | Recommended office lighting |
| 400 lux | Sunrise or sunset on a clear day. Well-lit office area. |
| 500 lux | Lighting level for an office according to the European law UNI EN 12464. |
| 1,000 lux | Overcast day |
| 10,000–25,000 lux | Full daylight (not direct sun) |
| 32,000–130,000 lux | Direct sunlight |
[edit] Also See
- Sunlight
- Lighting Installation
- Daylight
- Moonlight
- Sunlight
- Lighting Installation
- Daylight
- Lux
- Metal Halide lamp
- Albedo
- Metal Halide lamp
- Color Temperature
- LED
[edit] Reference
- Wikipedia Reference see Lux [1]
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