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How to Convert from Candle (UK) [c (UK)] to Carcel Unit
Convert luminous intensity values from the historical British candle (UK) unit to the carcel unit, a 19th-century oil lamp standard. Understand usage, conversion rate, and practical applications for historical lighting restoration and analysis.
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Candle (UK) [c (UK)] to Carcel unit Conversion Table
| Candle (UK) [c (UK)] | Carcel unit |
|---|
Custom Unit Conversion Table Generator – Instant Printable Conversion Tables
Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.
Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.
Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.
| Candle (UK) [c (UK)] | Carcel unit |
|---|
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What Is This Tool?
This unit converter transforms luminous intensity measurements from the obsolete British candle (UK) unit to the carcel unit, a historical standard based on oil lamp output. It helps in comparing and interpreting lighting data from historical sources.
How to Use This Tool?
- Enter the luminous intensity value in candle (UK) units.
- Select candle (UK) as the input unit and carcel unit as the output.
- Click convert to see equivalent luminous intensity in carcel units.
- Use the given formula or automated calculation to obtain results.
Key Features
- Converts luminous intensity from candle (UK) to carcel unit.
- Based on historic photometric units used before the candela.
- Supports research and restoration of period lighting conditions.
- Includes example conversions for clarity.
- Browser-based tool, easy to use without installation.
Examples
- 5 candle (UK) equals 0.54197017 carcel unit.
- 10 candle (UK) equals 1.08394034 carcel unit.
- Multiply the candle (UK) value by 0.108394034 to get carcel units.
Common Use Cases
- Interpreting historical lighting specifications from British archives.
- Restoring museum and theatre lighting to original illumination levels.
- Converting early photometric data for modern comparison.
- Comparing brightness in 19th-century oil lamp catalogs and experiments.
- Documenting archival descriptions of period lighting performance.
Tips & Best Practices
- Verify source data represents the historical context correctly.
- Understand the original physical conditions affecting the units.
- Use the conversion for approximation, not precise modern equivalence.
- Apply conversions carefully when restoring or analyzing old lighting.
- Cross-check with multiple historic sources when possible.
Limitations
- Both units are obsolete and based on physical sources that vary.
- Variations in fuel, lamp construction, and measurement affect values.
- Exact equivalence to modern units is not guaranteed.
- Conversion approximates past lighting standards for reference only.
Frequently Asked Questions
- What is the candle (UK) unit?
- It is an obsolete British luminous intensity unit defined by the light from a standardized candle used in 19th- and early 20th-century UK photometry.
- What does the carcel unit measure?
- The carcel unit is a historical luminous intensity measure based on the light emitted from a standardized oil lamp burning colza oil under specified conditions.
- Why convert candle (UK) to carcel units?
- Converting these units helps compare historical lighting data from British candles with oil lamp standards for research, restoration, and archival documentation.
Key Terminology
- Candle (UK) [c (UK)]
- An obsolete British unit of luminous intensity defined by the light from a standardized candle used historically in UK photometry.
- Carcel Unit
- A historical luminous intensity unit based on the light emitted from a standardized oil lamp burning colza oil under set conditions.
- Luminous Intensity
- A measurement of the wavelength-weighted power emitted by a light source in a particular direction, perceived by the human eye.