Lumen per Square Meter Steradian to Apostilb Conversion
Convert between Lumen per Square Meter Steradian and Apostilb quickly and accurately.
How to Convert Lumen per Square Meter Steradian to Apostilb
Conversion Formula
Example
Convert 15 lm/(m²·sr) to asb:
Unit Information
Learn about the luminance units you're converting between
Lumen per Square Meter Steradian
lm/(m²·sr)
Definition
The Lumen per Square Meter Steradian is a unit of luminance that explicitly shows the relationship between luminous flux, area, and solid angle. It is dimensionally equivalent to candela per square meter and provides insight into the geometric aspects of light measurement.
History/Origin
This unit was developed to emphasize the relationship between luminous flux, surface area, and solid angle in luminance measurements. It provides a more detailed understanding of how light is distributed and measured in three-dimensional space.
Current Use
Used in advanced photometry and lighting calculations where the relationship between flux, area, and solid angle is important. Common in research applications and detailed lighting analysis where understanding the geometric aspects of light distribution is crucial.
Multiplier
1
Offset
0
Apostilb
asb
Definition
The Apostilb is a non-SI unit of luminance equal to 0.3183098862 candela per square meter. It is used in some specialized applications and provides an alternative way to express low luminance values in certain technical contexts.
History/Origin
This unit was developed as part of early photometric systems and is still used in some specialized applications. It provides a convenient way to express low luminance values and is occasionally found in technical specifications and measurement systems.
Current Use
Used in specialized photometric applications and certain technical contexts where traditional units are preferred. Occasionally found in older technical specifications and specialized measurement systems where non-SI units are still used.
Multiplier
0.318
Offset
0
Lumen per Square Meter Steradian to Apostilb Conversion Table
| Lumen per Square Meter Steradian [lm/(m²·sr)] | Apostilb [asb] |
|---|---|
| 1 lm/(m²·sr) | 3.141593 asb |
| 10 lm/(m²·sr) | 31.415927 asb |
| 25 lm/(m²·sr) | 78.539816 asb |
| 50 lm/(m²·sr) | 157.079633 asb |
| 100 lm/(m²·sr) | 314.159265 asb |
| 0 lm/(m²·sr) | 0E+0 asb |
| -10 lm/(m²·sr) | -31.415927 asb |
| -40 lm/(m²·sr) | -125.663706 asb |
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