What Is This Tool?
This tool converts luminance values from skot, an outdated unit used for very low light levels, to lumen per square centimetre per steradian, a modern photometric unit for small-area high brightness measurements.
How to Use This Tool?
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Enter the luminance value in skot units
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Select skot as the original unit and lumen/sq. cm/steradian as the target unit
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Click convert to get the equivalent luminance value in lumen per square centimetre per steradian
Key Features
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Allows quick conversion from skot to lumen/sq. cm/steradian
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Supports interpretation of low-light and historical luminance data
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Browser-based and user-friendly interface for easy input and results
Examples
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10 Skot converts to 3.1830988618379e-7 Lumen/sq. cm/steradian
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0.5 Skot converts to 1.59154943091895e-8 Lumen/sq. cm/steradian
Common Use Cases
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Translating historical night-time or very low-light luminance data for modern analysis
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Characterizing brightness of small or intense light sources like micro-LEDs
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Calibrating luminance meters and comparing legacy data to current SI standards
Tips & Best Practices
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Use this tool to bridge old and modern photometric measurements accurately
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Be cautious interpreting very small values due to numerical precision limits
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Ensure the application context matches the luminance scale for meaningful conversion
Limitations
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The skot is no longer a standard unit and is obsolete in modern photometry
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Low-value conversions require careful consideration of numerical accuracy
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Lumen/sq. cm/steradian units are applicable mostly to high-brightness or small-area sources—scale mismatches can reduce usefulness
Frequently Asked Questions
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What is skot used for?
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Skot was used to measure very low luminance levels under dark-adapted vision, mainly in historical lighting studies and low-light measurements.
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Why convert skot to lumen/sq. cm/steradian?
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Converting skot to lumen/sq. cm/steradian helps translate obsolete low-light data into a modern unit suitable for precise optical analysis and calibration.
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Are there limitations converting skot values?
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Yes, skot is obsolete and conversions involve very small numbers, so care is needed to maintain accuracy and ensure proper application context.
Key Terminology
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Skot
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An outdated photometric unit representing very low luminance levels under scotopic vision, no longer used in modern practice.
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Lumen per square centimetre per steradian
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A luminance unit quantifying luminous flux passing through a surface area per solid angle, equivalent to candela per square centimetre.
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Luminance
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The measure of luminous intensity per unit area, indicating brightness perceived from a surface.