What Is This Tool?
This converter enables users to translate luminous intensity measurements from the international candle, an obsolete photometric unit, to the bougie decimal, an old French unit. It facilitates understanding and converting historical lighting data between these legacy units.
How to Use This Tool?
-
Input the luminous intensity value in candle (international) [c]
-
Select bougie decimal as the target unit
-
Click convert to get the equivalent value
-
Use the result to interpret or translate historical photometric data
Key Features
-
Converts between candle (international) and bougie decimal units of luminous intensity
-
Supports interpretation of historical lighting standards
-
Simple and straightforward conversion with a 1:1 ratio
-
Browser-based and easy to use for archival and engineering purposes
Examples
-
5 candle (international) [c] equals 5 bougie decimal
-
0.75 candle (international) [c] equals 0.75 bougie decimal
Common Use Cases
-
Comparing luminous intensity values in older international and French lighting standards
-
Restoring and analyzing period lighting systems and archival research
-
Studying the history and evolution of photometric measurement units
Tips & Best Practices
-
Recognize that both units are obsolete and primarily relevant for historical contexts
-
Verify the context of source data to ensure proper interpretation
-
Use conversion results mainly for archival, educational, or restoration projects
Limitations
-
The units are replaced by the modern SI candela and rarely used currently
-
Conversions may lack precision due to variations in original reference lamps
-
Applicability depends on correct contextual understanding of legacy measurement systems
Frequently Asked Questions
-
What is the relationship between candle (international) and bougie decimal?
-
Both units are obsolete photometric measures of luminous intensity, and the conversion between them is 1 to 1.
-
Why convert from candle (international) to bougie decimal?
-
Conversion helps interpret and compare historical luminous intensity data between older international and French standards.
-
Are these units used in modern lighting measurements?
-
No, these units have been replaced by the SI candela and are mainly of historical or archival interest.
Key Terminology
-
candle (international)
-
An obsolete photometric unit once used to represent luminous intensity based on a standard lamp, mainly encountered in older literature.
-
bougie decimal
-
A historical French unit of luminous intensity used as a decimal-based candle during 19th and early 20th century metrication.
-
luminous intensity
-
A measure of the wavelength-weighted power emitted by a light source in a particular direction, perceived by human vision.