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How to Convert from Lumen/steradian [lm/sr] to Candle (international) [c]
Learn how to convert luminous intensity values from lumen per steradian (lm/sr) to the historical unit candle (international) [c]. This guide explains the equivalency, useful applications, and practical examples for converting between these units in lighting and photometry.
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Lumen/steradian [lm/sr] to Candle (international) [c] Conversion Table
| Lumen/steradian [lm/sr] | Candle (international) [c] |
|---|
Custom Unit Conversion Table Generator – Instant Printable Conversion Tables
Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.
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| Lumen/steradian [lm/sr] | Candle (international) [c] |
|---|
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What Is This Tool?
This converter allows you to transform luminous intensity values measured in lumen per steradian into the obsolete photometric unit candle (international). It helps bridge modern SI measurements and historical references in lighting standards.
How to Use This Tool?
- Enter the luminous intensity value measured in lumen per steradian (lm/sr)
- Select the target unit candle (international) [c]
- Click convert to get the equivalent value instantly
- Use the conversion to interpret or translate between modern and historical photometric data
Key Features
- Converts luminous intensity between lumen/steradian and candle (international) with a 1:1 equivalence
- Supports interpretation of legacy lighting data and older technical documents
- Useful for photometric testing, historical research, and updating vintage specifications
- Browser-based and easy to use for quick unit translation
Examples
- 5 lumen/steradian [lm/sr] equals 5 candle (international) [c]
- 0.1 lumen/steradian [lm/sr] equals 0.1 candle (international) [c]
Common Use Cases
- Specifying luminous intensity of LEDs, indicator lamps, and flashlights for directional visibility
- Comparing beam intensity patterns of vehicle headlights and stage lighting during photometric tests
- Converting historical lighting unit data into modern SI units for engineering or research
- Calibrating photometric instruments measuring light distribution per solid angle
- Interpreting pre-SI technical documents and vintage lighting equipment specifications
Tips & Best Practices
- Use this conversion primarily for historical comparison and data translation, not for current measurement standards
- Confirm the context when working with international candle values, as it is an obsolete unit
- Leverage this tool when updating or interpreting older lighting standards alongside modern candela measurements
- Apply conversion carefully when dealing with legacy photometric datasets for accurate understanding
Limitations
- The candle (international) is an obsolete unit no longer common in modern measurements
- Conversion mainly serves interpretive or translational purposes between legacy and SI units
- Accuracy depends on historical standard lamp references and context
- Not intended for active photometric measurement applications today
Frequently Asked Questions
- Is lumen per steradian equivalent to the international candle?
- Yes, 1 lumen per steradian equals 1 candle (international), making the units numerically equivalent despite their historical contexts.
- Why is the candle (international) unit considered obsolete?
- The candle (international) was used before the adoption of the modern SI candela and is mainly encountered in older documents rather than contemporary measurements.
- When should I use this conversion?
- Use this conversion when working with legacy lighting data, historical research, or when translating older photometric standards into modern SI units.
Key Terminology
- Lumen per steradian (lm/sr)
- A unit measuring luminous intensity as luminous flux emitted per unit solid angle, numerically equal to the candela.
- Candle (international) [c]
- An obsolete photometric unit that quantified luminous intensity based on a historical standard lamp prior to SI candela adoption.
- Luminous intensity
- A measure of the amount of visible light power emitted in a particular direction per unit solid angle.