What Is This Tool?
This converter helps transform illumination measurements from the centimeter-candle, an outdated unit, to lux, the internationally recognized SI unit for illuminance. It is designed to assist with the interpretation and standardization of legacy lighting data.
How to Use This Tool?
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Enter the illumination value in centimeter-candle [cm*c].
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Select the from unit as centimeter-candle and the to unit as lux [lx].
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Click the convert button to see the equivalent lux value.
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Review the converted result, reflecting the illumination in lux.
Key Features
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Converts obsolete centimeter-candle values to modern lux units.
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Provides quick and easy conversion for photometric data.
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Supports updating historical and archival lighting measurements.
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Browser-based and user-friendly interface.
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Facilitates comparison and standardization for research and design.
Examples
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0.5 centimeter-candle equals 5000 lux.
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2 centimeter-candle equals 20000 lux.
Common Use Cases
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Interpreting and updating historical photometry and lighting reports with candle-based units.
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Converting legacy optical instrument lighting specifications to SI units.
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Standardizing illuminance data for lighting design and research applications.
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Calibrating lamps and measuring illumination for compliance with modern standards.
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Archival conversion for historical research in lighting technology.
Tips & Best Practices
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Always verify the original measurement context when converting from centimeter-candle.
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Use the tool to update older data to lux for consistency with current standards.
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Consider the obsolete nature of centimeter-candle when interpreting results.
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Apply conversions carefully in calibration to maintain accuracy in standards compliance.
Limitations
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Centimeter-candle is an outdated unit with limited practical use outside historical references.
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Its definition relies on a point source one centimetre away, which may not match real lighting environments.
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Conversion assumes the candle is equal to one candela, which may vary in historical contexts.
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Less precise and potentially misleading for modern lighting applications.
Frequently Asked Questions
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What is a centimeter-candle?
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It is an obsolete illumination unit representing the light on a surface one centimetre from a point source of one candle, historically used in photometry.
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Why convert from centimeter-candle to lux?
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Conversion updates historical lighting data to the SI standard lux, enabling consistency and comparability with modern measurements.
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Is lux a more accurate unit than centimeter-candle?
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Lux is the modern SI unit for illuminance and is widely recognized for accuracy and practical application, unlike the obsolete centimeter-candle.
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How do I convert a value from centimeter-candle to lux?
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Multiply the centimeter-candle value by 10,000 to get the corresponding lux value according to the conversion rate.
Key Terminology
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Centimeter-candle [cm*c]
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An obsolete illuminance unit defined by the light on a surface one centimetre from a point source emitting one candle of light.
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Lux [lx]
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The SI derived unit for illuminance, expressing luminous flux per square metre weighted by human visual response.
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Illuminance
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A measure of the luminous flux incident on a surface per unit area.
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Candela
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The SI base unit of luminous intensity, representing the power emitted by a light source in a particular direction.