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How to Convert from Candle (UK) [c (UK)] to Lumen/steradian [lm/sr]
Convert luminous intensity values from the obsolete British candle (UK) unit to the modern lumen per steradian unit, enabling comparison with contemporary photometric data and restoring historical lighting measurements.
Please check your input. It must be a valid numeric value.
Candle (UK) [c (UK)] to Lumen/steradian [lm/sr] Conversion Table
| Candle (UK) [c (UK)] | Lumen/steradian [lm/sr] |
|---|
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)] | Lumen/steradian [lm/sr] |
|---|
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What Is This Tool?
This converter allows you to transform luminous intensity values expressed in the historical candle (UK) unit into lumen per steradian, which is equivalent to the SI unit candela. It supports interpretation of old British lighting data and their alignment with modern photometric standards.
How to Use This Tool?
- Enter the value in candle (UK) units you want to convert
- Choose candle (UK) as the input unit and lumen/steradian as the output unit
- Submit to get the equivalent luminous intensity in lumen per steradian
- Use the result for analysis, restoration, or calibration purposes
Key Features
- Converts an obsolete British luminous intensity unit to a modern SI-based unit
- Supports understanding of historical lighting measurements and specifications
- Helps restore period lighting for museums, theatres, and historic places
- Facilitates comparison of early photometric data with current units
Examples
- 5 candle (UK) equals approximately 5.20833 lumen/steradian
- 10 candle (UK) converts to about 10.41667 lumen/steradian
Common Use Cases
- Interpreting British historical lighting documents and archives
- Restoring illumination levels in museums and historic theatres
- Converting early photometric measurements to modern units
- Calibrating instruments measuring directional light intensity
Tips & Best Practices
- Verify the historical context before converting measurements
- Use the conversion as a guide since the candle (UK) unit may vary slightly
- Prefer lumen/steradian (candela) in modern lighting engineering work
- Ensure consistent units when comparing datasets across eras
Limitations
- The candle (UK) is obsolete and defined by a physical candle that may have burned inconsistently
- Conversion results are approximate due to variations in the original light source
- Modern measurements prefer standardized SI units over candle (UK)
Frequently Asked Questions
- What is candle (UK) unit?
- It is an obsolete British luminous intensity unit based on the light from a standardized candle used before adopting the candela.
- Why convert candle (UK) to lumen per steradian?
- To translate historical British lighting values to the modern SI unit candela, allowing comparison and analysis using current standards.
- Is the conversion exact?
- No, because the candle (UK) was based on physical candles which could vary, so the conversion provides an approximate equivalent.
Key Terminology
- Candle (UK)
- An obsolete British luminous intensity unit defined by the light emitted from a standardized candle used historically before the candela.
- Lumen per steradian (lm/sr)
- A measurement of luminous intensity, equal numerically to the candela, representing luminous flux per unit solid angle.
- Luminous Intensity
- The quantity of visible light emitted in a particular direction per unit solid angle.