What does lumen per steradian measure?

Lumen per steradian (lm/sr) measures luminous intensity, representing luminous flux emitted per unit solid angle and is numerically equal to the SI unit candela.

Why convert luminous intensity to pentane candle?

Converting to pentane candle helps relate modern luminous intensity measurements to historical lighting units used in older standards and documentation.

Is pentane candle still used in modern lighting?

No, pentane candle is a historical unit that has been largely replaced by candela in modern photometry and lighting design.

How to Convert from Lumen/steradian [lm/sr] to Pentane candle (10 candle power)?

Learn how to convert luminous intensity values from lumen per steradian (lm/sr), the SI unit equivalent to candela, to the historical unit pentane candle (10 candle power). Understand uses, examples, and practical tips for this conversion.

Lumen/steradian [lm/sr]

Pentane candle (10 candle power)

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Lumen/steradian [lm/sr] to Pentane candle (10 candle power) Conversion Table

Lumen/steradian [lm/sr]	Pentane candle (10 candle power)

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

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Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Lumen/steradian [lm/sr] to Pentane candle (10 candle power) Conversion Table
Lumen/steradian [lm/sr]	Pentane candle (10 candle power)

Explore More Luminous Intensity Units Converter

What Is This Tool?

This converter transforms luminous intensity measurements from lumen per steradian (lm/sr), which equals the modern SI unit candela, into pentane candle (10 candle power), a historical unit based on the light emitted by a pentane candle burning with 10 times the traditional candle power.

How to Use This Tool?

Enter the luminous intensity value in lumen per steradian (lm/sr).
Select the desired output unit as pentane candle (10 candle power).
Click the convert button to get the corresponding value in pentane candles.
Use the converted results for documentation, restoration, or comparative analysis.

Key Features

Converts luminous intensity from lumen per steradian (lm/sr) to pentane candle (10 candle power).
Provides an easy-to-use, browser-based interface for quick conversion.
Supports understanding and comparing modern and historical photometric units.
Includes practical examples for reference.
Useful for lighting historians, museum curators, and calibration professionals.

Examples

Converting 5 lm/sr yields 0.5 pentane candle (10 candle power).
Converting 20 lm/sr results in 2 pentane candle (10 candle power).

Common Use Cases

Relating modern SI luminous intensity values to historical lighting units for research.
Interpreting and translating older photometric specifications or museum records.
Calibrating instruments referencing older candle-based luminous intensity standards.

Tips & Best Practices

Verify the context and unit standards when working with historical luminous intensity data.
Use this conversion tool primarily for historical, educational, or restoration purposes.
Combine converted values with calibrated instruments for accurate comparisons.
Understand that pentane candle is not commonly used in modern lighting design.

Limitations

Pentane candle is a non-SI, historical unit not aligned with current photometric standards.
Modern luminous intensity measurements typically use candela, limiting pentane candle relevance.
Historical records may have variations due to experimental conditions or unit definitions.

Frequently Asked Questions

What does lumen per steradian measure?: Lumen per steradian (lm/sr) measures luminous intensity, representing luminous flux emitted per unit solid angle and is numerically equal to the SI unit candela.
Why convert luminous intensity to pentane candle?: Converting to pentane candle helps relate modern luminous intensity measurements to historical lighting units used in older standards and documentation.
Is pentane candle still used in modern lighting?: No, pentane candle is a historical unit that has been largely replaced by candela in modern photometry and lighting design.

Key Terminology

Lumen/steradian (lm/sr): A unit measuring luminous intensity equivalent to candela; it defines luminous flux per unit solid angle emitted by a source.
Pentane candle (10 candle power): A historical luminous intensity unit representing ten times the light output of a traditional candle, based on a standard candle burning pentane.
Luminous intensity: The measure of visible light power emitted by a source in a given direction per unit solid angle.

Quick Knowledge Check

What is the relationship between lumen per steradian and candela?

They measure different quantities.

They are numerically equal units of luminous intensity.

Lumen per steradian is larger than candela.

What is a pentane candle (10 candle power)?

A modern SI unit of luminous intensity.

A historical unit equal to ten times the traditional candle power.

A measure of luminous flux.

Why might one convert from lumen/steradian to pentane candle?

To perform modern lighting design calculations.

To relate current measurements to historical photometric data.

To measure luminous flux.

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