What Is This Tool?
This tool allows for straightforward conversion between the obsolete luminous intensity units candle (international) [c] and decimal candle. It is designed to help interpret and translate historical lighting data into comparable units.
How to Use This Tool?
-
Enter the luminous intensity value in candle (international) [c]
-
Select candle (international) [c] as the original unit
-
Choose decimal candle as the target unit
-
Click the convert button to see the equivalent value in decimal candle
Key Features
-
Converts obsolete photometric units candle (international) [c] to decimal candle accurately according to historical standards
-
Simple and user-friendly interface for quick conversions
-
Useful for researchers, engineers, and historians working with vintage lighting data
-
Browser-based tool with no installation required
Examples
-
5 candle (international) [c] equals 5 decimal candles
-
0.75 candle (international) [c] equals 0.75 decimal candle
Common Use Cases
-
Interpreting and comparing luminous intensity from historical lighting documents
-
Translating older photometric standards to more recognizable historical units
-
Restoring and analyzing vintage lighting and photometry equipment
-
Studying 19th and 20th-century lighting industry standards
Tips & Best Practices
-
Always verify the context of historical data when converting between these obsolete units
-
Use conversions to aid understanding of legacy lighting specifications
-
Remember this conversion applies to outdated units replaced by the candela for modern applications
Limitations
-
Both candle (international) [c] and decimal candle are obsolete and replaced by the SI candela
-
Original standardization and calibration differences may cause slight inconsistencies
-
Not intended for contemporary photometric measurements requiring modern precision
Frequently Asked Questions
-
What are candle (international) [c] and decimal candle units?
-
They are historical units of luminous intensity previously used before the modern candela was adopted. Candle (international) measured intensity based on a standard lamp, while decimal candle represented light from a defined candle standard.
-
Why would I convert between these two obsolete units?
-
Conversion helps interpret and compare lighting data from historical sources or documents, making it easier to translate older standards into familiar terms.
-
Are these units still used in modern photometry?
-
No, both units have been superseded by the SI candela, which is now the official standard for luminous intensity measurements.
Key Terminology
-
Candle (international) [c]
-
An obsolete photometric unit of luminous intensity based on a specified standard lamp used before the adoption of the candela.
-
Decimal candle
-
A historical unit of luminous intensity defined by the light emitted from a standardized candle, used in 19th-century photometry.
-
Luminous intensity
-
A measure of the wavelength-weighted power emitted by a light source in a particular direction, perceived by the human eye.