Blondel to Candela per Square Foot Conversion

Convert between Blondel and Candela per Square Foot quickly and accurately.

From Blondel

blondel

To Candela per Square Foot

cd/ft²

How to Convert Blondel to Candela per Square Foot

Conversion Formula

1 blondel = 0.03 cd/ft²

1 cd/ft² = 33.816 blondel

Example

Convert 15 blondel to cd/ft²:

15 blondel = 15 × 0.03 cd/ft² = 0.444 cd/ft²

Unit Information

Learn about the luminance units you're converting between

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

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