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How to Convert from Lumen/square foot [lm/ft^2] to Nox?
Learn how to convert illuminance values from lumen per square foot to nox, understand their definitions, applications, and the conversion process for measuring varied light levels.
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Lumen/square foot [lm/ft^2] to Nox Conversion Table
| Lumen/square foot [lm/ft^2] | Nox |
|---|
Custom Unit Conversion Table Generator – Instant Printable Conversion Tables
Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.
Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.
Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.
| Lumen/square foot [lm/ft^2] | Nox |
|---|
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What Is This Tool?
This converter helps transform illumination measurements from lumen per square foot (lm/ft^2) into nox, facilitating the evaluation of light levels from indoor environments to very low light conditions like night-time scenes.
How to Use This Tool?
- Enter the illuminance value in lumen per square foot
- Select lumen/square foot [lm/ft^2] as the original unit
- Choose nox as the target unit for conversion
- Click convert to obtain the resulting measurement in nox
Key Features
- Converts illuminance from lumen/square foot to nox using established conversion rates
- Supports lighting design and code compliance for different environments
- Useful for analyzing very low illumination relevant to astronomy and environmental studies
- Browser-based and easy to use with simple inputs and outputs
Examples
- 2 lumen/square foot [lm/ft^2] equals 21527.82 nox
- 0.5 lumen/square foot [lm/ft^2] equals 5381.96 nox
Common Use Cases
- Setting and verifying lighting levels for indoor spaces such as offices and classrooms
- Measuring low-light conditions for astronomy or environmental nighttime illumination
- Planning and controlling exterior lighting to minimize stray light in dark-sky initiatives
- Testing low-illumination conditions for sensitive optical sensors and imaging technologies
Tips & Best Practices
- Ensure the suitability of the unit choice depending on lighting context—lumen/ft² for indoor brightness, nox for very low light
- Use this tool for specialized measurements involving low-light or near-darkness scenarios
- Verify input values carefully to avoid large theoretical results outside practical lighting conditions
Limitations
- Nox measures extremely low illumination levels, so converted values may be very large and theoretical when starting from typical indoor lumen/ft² values
- Conversion results are mainly applicable in specialized contexts such as nighttime lighting or optical sensor tests
- Care must be taken to apply the correct unit for the measurement context to ensure meaningful interpretation
Frequently Asked Questions
- What does lumen per square foot measure?
- Lumen per square foot quantifies illuminance, representing the luminous flux falling on one square foot of surface, commonly used in lighting design.
- What is a nox used for?
- A nox quantifies very low levels of illumination, such as moonlight or starlight, often applied in astronomy, environmental studies, and low-light sensor testing.
- Why might converted nox values be very large?
- Because nox represents millilux levels, converting from typically brighter lumen per square foot values results in very large outputs, reflecting the scale difference.
Key Terminology
- Lumen per square foot [lm/ft^2]
- A unit of illuminance denoting the luminous flux incident on a one-square-foot area, equivalent to the foot-candle.
- Nox
- A unit representing very low illuminance levels, equal to 1 millilux, used mainly for near-darkness conditions.
- Illuminance
- The measure of luminous flux on a surface area, indicating how much light is incident per unit area.