What does lumen/sq. meter/steradian measure?

It measures luminance, or how bright a surface appears from a specific direction, expressed as luminous intensity per area per solid angle.

Why convert lumen/sq. meter/steradian to stilb?

Converting helps interpret or compare modern SI luminance data with historical CGS unit measurements commonly used in older research and instrumentation.

Is stilb still commonly used in modern photometry?

No, stilb is less common today, as it is a CGS unit; modern practice primarily uses SI units like candela per square meter.

How to Convert from Lumen/sq. meter/steradian to Stilb [sb]

Convert luminance values from lumen per square meter per steradian (lm·m⁻²·sr⁻¹) to stilb [sb], a CGS unit of luminance, using this easy-to-use online tool designed for photometry and optical research needs.

Lumen/sq. meter/steradian

Stilb [sb]

Please check your input. It must be a valid numeric value.

Lumen/sq. meter/steradian to Stilb [sb] Conversion Table

Lumen/sq. meter/steradian	Stilb [sb]

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

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

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

Lumen/sq. meter/steradian to Stilb [sb] Conversion Table
Lumen/sq. meter/steradian	Stilb [sb]

Explore More Luminance Units Converter

What Is This Tool?

This converter helps transform luminance measurements from lumen per square meter per steradian, the SI unit equivalent to candela per square meter, into stilb, a CGS unit. It’s valuable for translating current luminance data into historical or legacy photometric units.

How to Use This Tool?

Enter the luminance value in lumen/sq. meter/steradian
Select lumen/sq. meter/steradian as the input unit
Choose stilb [sb] as the target unit
Click the convert button to get the equivalent stilb value
Review the converted result for use in your analysis or records

Key Features

Converts luminance from lumen/sq. meter/steradian to stilb [sb]
Supports photometry and lighting engineering applications
Facilitates comparisons between modern SI and CGS luminance units
Browser-based and user-friendly interface
Useful for optical research and reviewing older scientific literature

Examples

500 lumen/sq. meter/steradian converts to 0.05 stilb [sb]
1000 lumen/sq. meter/steradian converts to 0.1 stilb [sb]

Common Use Cases

Translating SI luminance data into CGS units for historical comparisons
Interpreting older photometric measurements and literature
Analyzing brightness of laboratory light sources in optical research
Comparing surface brightness for legacy instrumentation specifications
Ensuring accurate unit conversions in lighting and signage design

Tips & Best Practices

Always verify the units before and after conversion to avoid confusion
Use the tool when working with diverse datasets that include CGS measurements
Review measurement context to maintain consistent unit interpretation
Keep in mind stilb values represent luminance at a scale 10,000 times larger than candela per square meter
Apply conversions carefully when comparing modern and historical photometric data

Limitations

Stilb is a non-SI unit based on the CGS system and is less used currently
Unit confusion may arise if stilb values aren’t clearly identified
Conversion does not address any measurement precision or accuracy
Users must ensure unit consistency across their datasets
Handling stilb units requires understanding of the difference in scales versus SI units

Frequently Asked Questions

What does lumen/sq. meter/steradian measure?: It measures luminance, or how bright a surface appears from a specific direction, expressed as luminous intensity per area per solid angle.
Why convert lumen/sq. meter/steradian to stilb?: Converting helps interpret or compare modern SI luminance data with historical CGS unit measurements commonly used in older research and instrumentation.
Is stilb still commonly used in modern photometry?: No, stilb is less common today, as it is a CGS unit; modern practice primarily uses SI units like candela per square meter.

Key Terminology

Lumen/sq. meter/steradian: An SI unit of luminance indicating brightness as luminous intensity per projected area per solid angle, equivalent to candela per square meter.
Stilb [sb]: A CGS photometric luminance unit equal to 10,000 candela per square meter, used mainly in historical and optical research contexts.
Luminance: The measure of luminous intensity emitted or reflected from a surface in a particular direction per unit area and solid angle.

Quick Knowledge Check

What is the SI equivalent unit of lumen/sq. meter/steradian?

Stilb

Candela per square meter

Lux

Which system does stilb belong to?

SI system

CGS system

Imperial system

Why should you be careful when converting to stilb?

Because stilb is more precise

Because stilb values represent a luminance scale 10,000 times larger than candela per square meter

Because conversions take too long

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