Candle to Candle German Conversion

Comparison Chart of Candle to Candle German units to understand their conversion accurately.


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Candle (International Standard Candle)

Introduction : The international candle was a photometric unit of luminous intensity used before the candela. It represented the light emitted by a standard type of flame under specific conditions, typically a pure spermaceti candle burning at a fixed rate.

History & Origin : Established in the 19th century and internationally recognized in the early 20th century, the international candle served as a practical lighting reference. It was later replaced by the candela due to the need for a more precise and reproducible standard.

Current Use : Today, the international candle is primarily of historical interest. It once formed the foundation for calibrating photometric instruments and measuring lamp brightness, especially in early electric and flame-based lighting systems.

Candle (German Standard)

Introduction : The German candle was a national standard for luminous intensity, used before international harmonization. It defined brightness based on specific candles or lamps designed and maintained according to regulated German specifications.

History & Origin : Used in pre-20th century Germany, this standard candle measured slightly brighter than the international candle, around 1.11 candela. It reflected national calibration practices before SI units unified such measurements worldwide.

Current Use : The German candle was mainly used in laboratory, industrial, and municipal lighting applications in Germany. It helped standardize lamp and flame brightness prior to the adoption of the candela system.

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References

• NIST (US Government)
• Encyclopaedia Britannica