What Is This Tool?
This converter transforms luminance measurements from the Stilb (sb), an older CGS unit, into Candela per square meter (cd/m²), the modern SI unit. It helps interpret and compare luminance data reported in different unit systems.
How to Use This Tool?
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Enter the luminance value in Stilb (sb) that you want to convert.
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Select Stilb as the from-unit and Candela per square meter as the to-unit.
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Click the convert button to get the equivalent luminance in Candela per square meter.
Key Features
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Accurate conversion between Stilb and Candela per square meter using established conversion rates.
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Supports translation of historical photometric data into contemporary SI units.
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Useful for optical research, display calibration, and lighting design applications.
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Browser-based and easy to use for quick luminance value conversions.
Examples
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0.5 Stilb equals 5000 Candela per square meter (0.5 × 10000 cd/m²).
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2 Stilb equals 20000 Candela per square meter (2 × 10000 cd/m²).
Common Use Cases
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Translating luminance data from older publications reported in Stilb to modern SI units.
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Comparing historical photometric measurements with current display and lighting standards.
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Assisting research efforts where legacy luminance values need integration with modern instrumentation.
Tips & Best Practices
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Verify units carefully to ensure correct input and output for conversion accuracy.
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Use the tool to cross-reference luminance values when working with both historical and current data.
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Be aware of measurement context and calibration differences between older and modern instruments.
Limitations
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Stilb is a CGS unit rarely used in current standards, requiring precise conversion steps.
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Measurement accuracy can be influenced by calibration variations of equipment across different eras.
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Conversion assumes a uniform luminance surface and consistent observation direction.
Frequently Asked Questions
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What is a Stilb (sb)?
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The Stilb (sb) is a CGS unit of luminance representing 10,000 candela per square meter, measuring luminous intensity emitted or reflected from surfaces.
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Why convert Stilb to Candela per square meter?
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Converting Stilb to Candela per square meter helps interpret historic photometric data in the modern SI unit system for accurate comparison and analysis.
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Is the Stilb commonly used today?
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No, Stilb is an older CGS unit not commonly used currently; modern measurements typically use Candela per square meter.
Key Terminology
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Stilb (sb)
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A CGS photometric unit of luminance equal to 10,000 candela per square meter, representing luminous intensity per unit area in a given direction.
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Candela per square meter (cd/m²)
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The SI unit of luminance that quantifies how bright a surface is perceived based on light emitted or reflected per unit area.
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Luminance
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The measure of luminous intensity emitted or reflected by a surface per unit projected area in a specified direction.