Carcel Unit to Hefner Candle Conversion

Convert between Carcel Unit and Hefner Candle quickly and accurately.

From Carcel Unit

carcel unit

To Hefner Candle

hefner candle

How to Convert Carcel Unit to Hefner Candle

Conversion Formula

1 carcel unit = 10.678 hefner candle

1 hefner candle = 0.094 carcel unit

Example

Convert 15 carcel unit to hefner candle:

15 carcel unit = 15 × 10.678 hefner candle = 160.167 hefner candle

Unit Information

Learn about the luminous intensity units you're converting between

Carcel Unit

carcel unit

Definition

The Carcel Unit is a unit of luminous intensity based on the light output of a Carcel lamp burning colza oil. It was developed as a standardized reference for luminous intensity measurements and was widely used in France before the adoption of international standards.

History/Origin

Developed in France as a standardized reference for luminous intensity based on the light output of a specific lamp burning colza oil. It was named after the Carcel lamp and provided a reproducible standard for photometric measurements in French-speaking regions.

Current Use

Primarily of historical interest, though may still be referenced in older French technical specifications or photometric literature. It has been largely replaced by the international candle standard for modern applications and scientific measurements.

Multiplier

9.61

Offset

Hefner Candle

hefner candle

Definition

The Hefner Candle is a unit of luminous intensity based on the light output of a Hefner lamp burning amyl acetate. It was developed as a standardized reference for luminous intensity measurements and was widely used in German-speaking countries before the adoption of international standards.

History/Origin

Named after Friedrich von Hefner-Alteneck, who developed this standard in 1884. It was based on the light output of a specific lamp burning amyl acetate and provided a reproducible standard for photometric measurements in Germany and other German-speaking regions.

Current Use

Primarily of historical interest, though may still be referenced in older German technical specifications or photometric literature. It has been largely replaced by the international candle standard for modern applications and scientific measurements.

Multiplier

0.9

Offset