What Is This Tool?
This tool allows you to convert luminance values measured in stilb (sb), a CGS unit, into candela per square inch (cd/in²), a unit frequently used in photometric and display engineering contexts to express surface brightness.
How to Use This Tool?
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Enter the luminance value in stilb (sb) you want to convert.
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Select stilb as the 'from' unit and candela per square inch as the 'to' unit.
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Click the convert button to get the equivalent value in candela per square inch.
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Review the result representing brightness per square inch as used in display and instrumentation fields.
Key Features
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Converts luminance between stilb and candela per square inch accurately.
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Supports understanding of legacy photometric data in modern unit terms.
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Helpful for display brightness calibration and optical measurements.
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Easy to use with straightforward input and output interfaces.
Examples
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2 Stilb [sb] equals 12.9032 Candela/square inch.
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0.5 Stilb [sb] equals 3.2258 Candela/square inch.
Common Use Cases
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Translating historical CGS luminance measurements into units suitable for modern display engineering.
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Specifying brightness for CRTs and older flat-panel screens in photometric research.
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Describing luminance of instrument panel and automotive backlights measured in square inches.
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Comparing surface brightness in optical research and instrumentation with legacy data.
Tips & Best Practices
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Verify the uniformity of luminance distribution when converting between units.
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Use this converter to aid interpretation of older photometric literature and specifications.
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Consider the area unit differences carefully to ensure accuracy in high-precision applications.
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Employ conversions primarily for comparative and display engineering tasks involving inch-based surfaces.
Limitations
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Stilb is a CGS unit largely replaced by SI units, so use requires interpreting legacy data properly.
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Conversion assumes consistent luminance distribution without accounting for angular or spectral changes.
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Units differ by area standards (square meter vs. square inch), requiring precision for exact applications.
Frequently Asked Questions
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What is stilb used for?
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Stilb is a CGS unit of luminance used historically in photometric studies and optical research to describe brightness per square meter.
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Why convert stilb to candela per square inch?
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Converting stilb to candela per square inch helps interpret legacy data for display technologies and instrumentation that measure brightness over inch-based areas.
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Does this conversion consider light angle or spectrum?
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No, the conversion assumes a uniform distribution of luminance and does not account for directional or spectral variations.
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, used to quantify luminous intensity per unit area.
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Candela per square inch (cd/in²)
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A luminance unit measuring luminous intensity per one square inch of surface, used in photometric and display applications.
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Luminance
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The measure of luminous intensity emitted or reflected from a surface per unit area in a given direction.