What Is This Tool?
This converter changes illumination values from centimeter-candle, an older unit used close to small light sources, into meter-candle, a standardized unit equivalent to lux. It helps users translate historical and high-intensity near-source lighting data into commonly accepted modern units.
How to Use This Tool?
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Enter the value in centimeter-candle you want to convert
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Select 'centimeter-candle [cm*c]' as the input unit
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Choose 'meter-candle [m*c]' as the output unit
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Click the convert button to get the corresponding meter-candle value
Key Features
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Converts obsolete centimeter-candle units to meter-candle (lux) values
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Supports interpreting and calibrating legacy lighting measurements
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Simple and intuitive browser-based interface
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Useful for photometry, lighting design, and historical data analysis
Examples
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2 cm*c converts to 20,000 m*c
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0.5 cm*c converts to 5,000 m*c
Common Use Cases
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Translating historical photometry and old lighting data into modern units
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Comparing high illuminance measurements from very close light sources
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Calibrating illuminance readings in photography and lighting design
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Interpreting legacy optical instrument and photographic lighting specifications
Tips & Best Practices
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Always verify the measurement distance as the units imply different standard distances
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Use the tool to translate legacy data for consistency with modern lighting systems
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Understand that centimeter-candle is obsolete and mostly relevant for historical data
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Check converted values against practical lighting requirements for accuracy
Limitations
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Centimeter-candle is rarely used in current practice and relates mostly to legacy data
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Differences in light measurement distances can affect interpretation and validity
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Conversion is intended for informational and comparative purposes rather than precision
Frequently Asked Questions
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What is a centimeter-candle?
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A centimeter-candle is an outdated unit of illuminance that measures light intensity very close to a point source, historically used in photometry.
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How does meter-candle relate to lux?
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The meter-candle is numerically equal to the lux, representing illumination produced by a point source one meter away with one candela intensity.
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Why convert from centimeter-candle to meter-candle?
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Conversion helps interpret historical lighting data in terms of modern, standardized units like meter-candle or lux for better comparison and calibration.
Key Terminology
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Centimeter-candle [cm*c]
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An obsolete illumination unit representing light intensity measured one centimetre from a point source of one candle; mostly used historically in photometry.
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Meter-candle [m*c]
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An older illuminance unit equal to one lumen per square metre, equivalent to one lux, measuring illumination one metre from a point source of one candela.
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Lux
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The SI unit of illuminance, defined as one lumen per square metre, commonly used in modern lighting measurements.