What Is This Tool?
This online converter helps you translate illumination measurements from the nox unit, used for very low light levels, into meter-candle [m*c], an older but equivalent illuminance unit closely related to lux. It is useful for comparing faint natural lighting with standard lighting levels and interpreting historical data.
How to Use This Tool?
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Enter the value in nox that you wish to convert.
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Select 'nox' as the source unit and 'meter-candle [m*c]' as the target unit.
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Click the convert button to get the equivalent illumination value in meter-candle.
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Use the result to compare or calibrate lighting levels in your application.
Key Features
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Converts very low illuminance values from nox to meter-candle [m*c].
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Uses a precise, fixed conversion rate relating nox to meter-candle.
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Supports applications in astronomy, lighting design, and sensor calibration.
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Browser-based and easy to use without any installation.
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Provides examples and explanations for better understanding.
Examples
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Convert 10 nox to meter-candle: 10 nox equals 0.01 meter-candle [m*c].
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Convert 500 nox to meter-candle: 500 nox equals 0.5 meter-candle [m*c].
Common Use Cases
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Describing very low natural illumination such as moonlight and starlight in astronomy.
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Planning dark-sky environments and minimizing stray background lighting outdoors.
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Interpreting older photometric data that uses meter-candle terminology.
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Calibrating and testing sensitive optical sensors and imaging equipment.
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Comparing faint natural light levels with standard indoor and outdoor lighting.
Tips & Best Practices
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Always specify units clearly since nox is specialized and less commonly used today.
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Verify instrument sensitivity when measuring extremely low illuminance values due to their small magnitude.
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Use meter-candle [m*c] outputs for compatibility with commonly used lux-based standards.
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Apply this conversion to aid in accurate lighting design, sensor calibration, and environmental studies.
Limitations
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Nox measures very small illuminance levels, so corresponding meter-candle values are very low.
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Low magnitude values can be difficult to measure accurately with typical lighting instruments.
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Nox is a niche unit not widely used across all industries, requiring careful communication.
Frequently Asked Questions
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What does 1 nox equal in meter-candle?
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1 nox is equivalent to 0.001 meter-candle [m*c], representing very low illuminance.
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Why convert nox to meter-candle?
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Converting nox to meter-candle helps translate faint light measurements into a unit that matches lux and is commonly used in lighting design and photometry.
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Where is nox most commonly applied?
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Nox is used to describe extremely low natural lighting, such as moonlight or starlight, and to characterize low-illumination test conditions for optical sensors.
Key Terminology
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Nox
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A unit of illuminance representing very low light levels, equal to 1 millilux (0.001 lux).
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Meter-candle [m*c]
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An older unit of illuminance equal to one lumen per square metre, numerically equivalent to the lux.
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Illuminance
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A measure of the amount of light falling on a surface per unit area.