Lumen per Steradian to Carcel Unit Conversion
Convert between Lumen per Steradian and Carcel Unit quickly and accurately.
How to Convert Lumen per Steradian to Carcel Unit
Conversion Formula
Example
Convert 15 lm/sr to carcel unit:
Unit Information
Learn about the luminous intensity units you're converting between
Lumen per Steradian
lm/sr
Definition
The Lumen per Steradian is a unit of luminous intensity that is dimensionally equivalent to the candela. It represents the luminous flux emitted in a given direction per unit solid angle, providing an alternative way to express luminous intensity in terms of luminous flux.
History/Origin
Derived from the fundamental definition of the candela, which is one lumen per steradian. It provides an alternative perspective on luminous intensity by emphasizing the relationship between luminous flux and solid angle in photometric measurements.
Current Use
Widely used in theoretical photometry and in calculations where the luminous flux aspect of light is emphasized. It provides a direct link to the fundamental definitions of light measurement and is interchangeable with the candela in most practical applications.
Multiplier
1
Offset
0
Carcel Unit
carcel unit
Definition
The Carcel Unit is a unit of luminous intensity based on the light output of a Carcel lamp burning colza oil. It was developed as a standardized reference for luminous intensity measurements and was widely used in France before the adoption of international standards.
History/Origin
Developed in France as a standardized reference for luminous intensity based on the light output of a specific lamp burning colza oil. It was named after the Carcel lamp and provided a reproducible standard for photometric measurements in French-speaking regions.
Current Use
Primarily of historical interest, though may still be referenced in older French technical specifications or photometric literature. It has been largely replaced by the international candle standard for modern applications and scientific measurements.
Multiplier
9.61
Offset
0
Lumen per Steradian to Carcel Unit Conversion Table
| Lumen per Steradian [lm/sr] | Carcel Unit [carcel unit] |
|---|---|
| 1 lm/sr | 0.104058 carcel unit |
| 10 lm/sr | 1.040583 carcel unit |
| 25 lm/sr | 2.601457 carcel unit |
| 50 lm/sr | 5.202914 carcel unit |
| 100 lm/sr | 10.405827 carcel unit |
| 0 lm/sr | 0E+0 carcel unit |
| -10 lm/sr | -1.040583 carcel unit |
| -40 lm/sr | -4.162331 carcel unit |
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