Candela per Square Meter to Blondel Conversion

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

cd/m²
blondel

How to Convert Candela per Square Meter to Blondel

Conversion Formula

1 cd/m² = 3.142 blondel
1 blondel = 0.318 cd/m²

Example

Convert 15 cd/m² to blondel:

15 cd/m² = 15 × 3.142 blondel = 47.124 blondel

Unit Information

Learn about the luminance units you're converting between

Candela per Square Meter

cd/m²

Definition

The Candela per Square Meter is the SI derived unit of luminance, representing the luminous intensity per unit area of light traveling in a given direction. It quantifies how much light is emitted or reflected from a surface area.

History/Origin

Derived from the SI base units of luminous intensity (candela) and area (square meter), this unit was established as part of the modern metric system. It provides a standardized way to measure surface brightness and is fundamental to photometry and lighting design.

Current Use

Widely used in lighting engineering, display technology, and photometry for measuring screen brightness, surface illumination, and light output. Essential for designing lighting systems, evaluating display performance, and ensuring proper illumination levels in various applications.

Multiplier

1

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 Meter to Blondel Conversion Table

Candela per Square Meter [cd/m²] Blondel [blondel]
1 cd/m² 3.141593 blondel
10 cd/m² 31.415927 blondel
25 cd/m² 78.539816 blondel
50 cd/m² 157.079633 blondel
100 cd/m² 314.159265 blondel
0 cd/m² 0E+0 blondel
-10 cd/m² -31.415927 blondel
-40 cd/m² -125.663706 blondel