What is a foot-lambert?

A foot-lambert is an imperial unit of luminance measuring luminous intensity emitted or reflected per unit projected area in a given direction, commonly used for cinema and display brightness.

Why convert foot-lambert to stilb?

Conversion is useful for analyzing luminance data reported in different unit systems, especially when working with historical CGS photometric data or conducting optical research.

Is stilb commonly used today?

Stilb, a CGS luminance unit, is mostly replaced by SI units like candela per square meter, but it remains relevant for interpreting legacy data and some research contexts.

How to Convert from Foot-lambert [fL] to Stilb [sb]?

Learn how to convert luminance measurements from the imperial foot-lambert unit to the CGS stilb unit with this easy-to-use online converter tool.

Foot-lambert [fL]

Stilb [sb]

Please check your input. It must be a valid numeric value.

Foot-lambert [fL] to Stilb [sb] Conversion Table

Foot-lambert [fL]	Stilb [sb]

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Foot-lambert [fL] to Stilb [sb] Conversion Table
Foot-lambert [fL]	Stilb [sb]

Explore More Luminance Units Converter

What Is This Tool?

This converter allows you to translate luminance values from foot-lambert, an imperial unit used primarily in cinema and display calibration, to stilb, a CGS photometric unit often found in older scientific and research literature.

How to Use This Tool?

Enter the luminance value in foot-lamberts you wish to convert
Select foot-lambert as the starting unit and stilb as the target unit
Click the convert button to receive the equivalent value in stilb
Use the result to aid in comparison, calibration, or data analysis involving different luminance standards

Key Features

Converts luminance from foot-lambert to stilb accurately based on a defined conversion rate
Supports units commonly used in cinema, theater design, and optical research
Helps interpret historical or legacy photometric data reported in CGS units
Simple browser-based interface for quick conversions

Examples

Converting 10 foot-lamberts to stilb yields 0.003426259 stilb
Converting 5 foot-lamberts results in 0.0017131295 stilb

Common Use Cases

Calibrating projector brightness in cinemas and home theaters using imperial units
Describing reflected luminance for display and projection system testing
Analyzing luminous intensity in optical research with CGS units
Comparing and converting historical brightness data reported in different measurement systems

Tips & Best Practices

Ensure the input value is correctly measured in foot-lambert for meaningful conversions
Use the tool when working with legacy or scientific data requiring CGS unit interpretation
Cross-check converted values when precision is critical due to unit definition nuances
Remember that stilb units are mostly used for specific research contexts rather than modern everyday applications

Limitations

Foot-lambert is an imperial unit and less common in modern photometric practice compared to SI units
Stilb is a CGS unit largely replaced by SI units like candela per square meter in contemporary usage
Conversions primarily help interpret older or specialized data rather than general purpose luminance measurements
Measurement accuracy can vary slightly based on specific unit definitions and practical setups

Frequently Asked Questions

What is a foot-lambert?: A foot-lambert is an imperial unit of luminance measuring luminous intensity emitted or reflected per unit projected area in a given direction, commonly used for cinema and display brightness.
Why convert foot-lambert to stilb?: Conversion is useful for analyzing luminance data reported in different unit systems, especially when working with historical CGS photometric data or conducting optical research.
Is stilb commonly used today?: Stilb, a CGS luminance unit, is mostly replaced by SI units like candela per square meter, but it remains relevant for interpreting legacy data and some research contexts.

Key Terminology

Foot-lambert [fL]: An imperial luminance unit quantifying luminous intensity per unit projected area, mainly used in cinema and display calibration.
Stilb [sb]: A CGS photometric luminance unit equal to 10,000 candela per square meter, often used in optical research and older literature.
Luminance: A measure of the luminous intensity emitted or reflected from a surface per unit area in a given direction.

Quick Knowledge Check

What does the foot-lambert measure?

Luminous flux from a light source

Luminance or luminous intensity per unit projected area

Illuminance on a surface

What unit system does stilb belong to?

Imperial system

Centimetre-gram-second (CGS) photometric units

International System of Units (SI)

Why is converting foot-lambert to stilb important?

To measure light brightness in modern homes

To compare luminance data across different unit systems and historical data

To calculate electrical power usage

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