Candela per Square Foot to Apostilb Conversion
Convert between Candela per Square Foot and Apostilb quickly and accurately.
How to Convert Candela per Square Foot to Apostilb
Conversion Formula
Example
Convert 15 cd/ft² to asb:
Unit Information
Learn about the luminance units you're converting between
Candela per Square Foot
cd/ft²
Definition
The Candela per Square Foot is an imperial unit of luminance, representing the luminous intensity per unit area using the square foot as the area unit. It is commonly used in countries that employ imperial measurement systems for lighting applications.
History/Origin
Developed as part of the imperial system of measurements, this unit provides a practical way to measure surface brightness in contexts where square feet are the standard area unit. It bridges the gap between metric and imperial systems in lighting applications.
Current Use
Used in lighting design and engineering in countries using imperial units, particularly in the United States. Common in architectural lighting, display specifications, and lighting calculations where square footage is the standard area measurement.
Multiplier
10.764
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
Candela per Square Foot to Apostilb Conversion Table
| Candela per Square Foot [cd/ft²] | Apostilb [asb] |
|---|---|
| 1 cd/ft² | 33.815822 asb |
| 10 cd/ft² | 338.158219 asb |
| 25 cd/ft² | 845.395547 asb |
| 50 cd/ft² | 1690.791094 asb |
| 100 cd/ft² | 3381.582189 asb |
| 0 cd/ft² | 0E+0 asb |
| -10 cd/ft² | -338.158219 asb |
| -40 cd/ft² | -1352.632875 asb |
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