Candela per Square Foot to Blondel Conversion
Convert between Candela per Square Foot and Blondel quickly and accurately.
How to Convert Candela per Square Foot to Blondel
Conversion Formula
Example
Convert 15 cd/ft² to blondel:
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
Blondel
blondel
Definition
The Blondel is a non-SI unit of luminance equal to 0.3183098862 candela per square meter, identical to the apostilb. It is named after the French physicist André Blondel and is used in some specialized photometric applications.
History/Origin
Named after the French physicist André Blondel, this unit was developed as part of early photometric systems. It is identical to the apostilb and provides an alternative way to express low luminance values in certain technical and historical contexts.
Current Use
Used in specialized photometric applications and historical contexts where the Blondel unit is preferred. Occasionally found in older technical specifications and certain branches of photometry where traditional units are still used.
Multiplier
0.318
Offset
0
Candela per Square Foot to Blondel Conversion Table
| Candela per Square Foot [cd/ft²] | Blondel [blondel] |
|---|---|
| 1 cd/ft² | 33.815822 blondel |
| 10 cd/ft² | 338.158219 blondel |
| 25 cd/ft² | 845.395547 blondel |
| 50 cd/ft² | 1690.791094 blondel |
| 100 cd/ft² | 3381.582189 blondel |
| 0 cd/ft² | 0E+0 blondel |
| -10 cd/ft² | -338.158219 blondel |
| -40 cd/ft² | -1352.632875 blondel |
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