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How to Convert from Blondel to Lumen/square foot/steradian?
Learn how to convert luminance measurements from the obsolete blondel unit to the non-SI unit lumen per square foot per steradian for applications in historical data interpretation and lighting design.
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Blondel to Lumen/square foot/steradian Conversion Table
| Blondel | Lumen/square foot/steradian |
|---|
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.
| Blondel | Lumen/square foot/steradian |
|---|
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What Is This Tool?
This converter allows users to transform luminance values from blondel, an old photometric unit, into lumen per square foot per steradian, a unit commonly used in lighting design and outdoor display brightness evaluations.
How to Use This Tool?
- Enter the luminance value measured in blondel
- Select blondel as the input unit and lumen/square foot/steradian as the output unit
- Initiate the conversion to obtain the luminance equivalent in lumen per square foot per steradian
Key Features
- Converts luminance from the historic blondel unit to lumen/square foot/steradian
- Supports interpretation of legacy photometric data with modern customary units
- Useful for design assessments and calibration in lighting and outdoor advertising fields
Examples
- 1 Blondel equals 0.0295719561 Lumen/square foot/steradian
- 10 Blondels equal 0.295719561 Lumen/square foot/steradian
Common Use Cases
- Converting historical luminance data for compatibility with customary foot-based units
- Analyzing legacy lighting measurements for modern architectural design projects
- Calibrating photometers that produce readings in non-SI customary luminance units
Tips & Best Practices
- Ensure clarity on the unit system (SI vs. customary) before and after conversion
- Use the tool primarily for legacy data rather than ongoing measurements
- Double-check conversions when precise lighting calibration is required due to rounding factors
Limitations
- Blondel is an outdated unit and not used in current measurements
- Conversions mostly apply to historical or legacy data sets
- Unit system differences may necessitate further conversions for full integration
Frequently Asked Questions
- Why convert blondel to lumen/square foot/steradian?
- This conversion helps compare historical luminance values expressed in blondel with measurements using customary non-SI units relevant in modern lighting and design contexts.
Key Terminology
- Blondel
- An outdated photometric unit of luminance used in early 20th-century lighting measurements, named after André Blondel.
- Lumen/square foot/steradian
- A non-SI unit of luminance indicating the luminous flux per unit area per unit solid angle, equivalent to candelas per square foot.