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How to Convert from Lumen/steradian [lm/sr] to Candle (German) [c (German)]?
Learn how to convert luminous intensity measurements from lumen per steradian to the obsolete German candle unit using this practical unit converter tool. Understand key concepts and historical context.
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Lumen/steradian [lm/sr] to Candle (German) [c (German)] Conversion Table
| Lumen/steradian [lm/sr] | Candle (German) [c (German)] |
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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.
| Lumen/steradian [lm/sr] | Candle (German) [c (German)] |
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What Is This Tool?
This tool allows you to convert luminous intensity values from lumen per steradian (lm/sr) to the obsolete German candle (c (German)). It supports the interpretation of historical lighting data and facilitates comparisons with modern measurements.
How to Use This Tool?
- Enter the luminous intensity value in lumen per steradian (lm/sr).
- Select the target unit as candle (German) [c (German)].
- Click the convert button to view the equivalent value.
- Use the result to compare or interpret historical and modern lighting data.
Key Features
- Convert luminous intensity units between lumen/steradian and the German candle accurately.
- Supports interpretation of historical lighting specifications.
- Easy to use with clear unit definitions and example conversions.
- Ideal for restoration, archival research, and photometric analysis.
- Browser-based tool accessible without installation.
Examples
- 10 lm/sr converts to 9.5 c (German).
- 5 lm/sr converts to 4.75 c (German).
Common Use Cases
- Specifying the directional luminous intensity of LEDs, indicator lamps, and flashlights.
- Comparing beam intensity patterns of vehicle headlights and streetlights during photometric testing.
- Interpreting and converting 19th–early 20th-century German lighting measurements.
- Restoration and documentation of antique lamps and vintage lighting equipment.
- Calibrating devices that measure luminous flux per unit solid angle.
Tips & Best Practices
- Verify the historical source of luminous intensity values before conversion.
- Use this tool to assist with archival research and museum documentation.
- Compare results with modern candela measurements for greater precision.
- Remember that the German candle is an obsolete unit and may have slight variations.
- Use modern SI units like candela or lumen/steradian for current lighting measurements.
Limitations
- The candle (German) is an outdated unit no longer in standard use.
- It may vary slightly due to historical calibration and definition differences.
- Modern photometry prefers standardized SI units such as candela and lumen/steradian.
Frequently Asked Questions
- What does 1 lumen per steradian represent?
- It specifies luminous intensity as the luminous flux emitted per unit solid angle and is numerically equal to one candela.
- Why convert lumen/steradian to the German candle?
- To interpret and compare historical luminous intensity data documented in German candles with modern measurements.
- Is the candle (German) unit still in use?
- No, it is an obsolete unit replaced by the SI candela, but it remains relevant for historical data and restoration work.
Key Terminology
- Lumen/steradian [lm/sr]
- A unit measuring luminous intensity that represents luminous flux per unit solid angle and equals one candela.
- Candle (German) [c (German)]
- An old German unit of luminous intensity based on a standard flame, now replaced by the candela.
- Luminous intensity
- The amount of visible light power emitted in a particular direction per unit solid angle.