Luminous efficiency
From Biocrawler, the free encyclopedia.
Luminous efficiency is a measure of the proportion of the energy supplied to a lamp that is converted into light energy. It is calculated by dividing the lamp's luminous flux, measured in lumens, by the power consumption, measured in watts.
See the article light bulb for the specific efficiency of various types of electric light sources.
[edit]
SI light units
| SI light units edit (http://www.biocrawler.com/w/index.php?title=Template:SI_light_units&action=edit) | ||||
|---|---|---|---|---|
| Quantity | SI unit | Symbol | Notes | |
| Luminous energy | lumen seconds | lm · s | lumen seconds are sometimes called Talbots | |
| Luminous flux | lumen or (candela · steradian) | lm | also called Luminous power | |
| Luminous intensity | candela or (lumen / steradian) | cd | ||
| Luminance | candela / square metre | cd/m2 | also called Luminosity | |
| Illuminance | lux or (lumen / square metre) | lx | ||
| Luminous efficiency | lumens per watt | lm/W | ||
 This physics article is a stub. You can help Biocrawler by expanding it (http://www.biocrawler.com/w/index.php?title=Luminous_efficiency&action=edit). |
