Why convert from lumen/sq. cm/steradian to blondel?

Conversion helps interpret or compare modern luminance measurements with historical data that used the blondel unit, facilitating consistency in photometric analysis.

Is the blondel unit still widely used today?

No, the blondel is an obsolete unit replaced by the SI unit candela per square metre and is mainly referenced in older literature.

What is the relationship between lumen/sq. cm/steradian and candela?

One lumen per square centimetre per steradian equals candela per square centimetre, since 1 candela equals 1 lumen per steradian.

How to Convert from Lumen/sq. cm/steradian to Blondel?

Learn how to convert luminance measurements from lumen per square centimetre per steradian to the obsolete blondel unit. This guide covers definitions, uses, conversion steps, and historical context.

Lumen/sq. cm/steradian

Blondel

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Lumen/sq. cm/steradian to Blondel Conversion Table

Lumen/sq. cm/steradian	Blondel

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.

Lumen/sq. cm/steradian to Blondel Conversion Table
Lumen/sq. cm/steradian	Blondel

Explore More Luminance Units Converter

What Is This Tool?

This unit converter allows you to transform luminance values from lumen per square centimetre per steradian to blondel, an older photometric unit. It's useful for comparing modern measurements with historical data and understanding legacy photometric literature.

How to Use This Tool?

Enter the luminance value in lumen per square centimetre per steradian
Select the source unit as lumen/sq. cm/steradian
Choose blondel as the target unit
Click the convert button to get the corresponding blondel value
Review the result for use in photometric analysis or historical comparison

Key Features

Converts photometric luminance units within a browser-based tool
Transforms lumen/sq. cm/steradian values to the obsolete blondel unit
Supports analysis of high-brightness and small-area luminance measurements
Enables comparison between modern and historical lighting data
Easy-to-use interface for seamless unit conversion

Examples

2 lumen/sq. cm/steradian equals approximately 62831.85 blondel
0.5 lumen/sq. cm/steradian equals approximately 15707.96 blondel

Common Use Cases

Analyzing brightness of small or intense light sources such as micro-LEDs
Conducting optical and photometric measurements requiring small-area luminance units
Calibrating luminance meters for high-intensity samples
Interpreting historical photometric data in blondel units
Converting old measurement reports to modern standards for consistency

Tips & Best Practices

Use this converter mainly for archival or academic research purposes
Verify unit selection carefully to avoid misinterpretation
Understand that blondel is an obsolete unit, primarily of historical interest
Cross-reference converted values with SI units for practical applications
Be mindful that precision may vary due to the discontinuation of blondel

Limitations

Blondel is no longer commonly used and is considered obsolete
Conversions serve mainly historical or archival needs rather than routine measurement
Precision may be affected by rounding and absence of blondel in modern standards
Direct applicability in current photometric devices is uncommon

Frequently Asked Questions

Why convert from lumen/sq. cm/steradian to blondel?: Conversion helps interpret or compare modern luminance measurements with historical data that used the blondel unit, facilitating consistency in photometric analysis.
Is the blondel unit still widely used today?: No, the blondel is an obsolete unit replaced by the SI unit candela per square metre and is mainly referenced in older literature.
What is the relationship between lumen/sq. cm/steradian and candela?: One lumen per square centimetre per steradian equals candela per square centimetre, since 1 candela equals 1 lumen per steradian.

Key Terminology

Lumen/sq. cm/steradian: A photometric unit quantifying luminous flux per unit area per unit solid angle, equivalent to candela per square centimetre.
Blondel: An obsolete photometric luminance unit, named after André Blondel, replaced by the SI candela per square metre.
Candela: The SI unit of luminous intensity, representing luminous flux per unit solid angle.

Quick Knowledge Check

What type of unit is lumen/sq. cm/steradian?

A unit of luminous flux

A photometric unit of luminance

A unit of area measurement

Why is the blondel unit converted to from lumen/sq. cm/steradian?

To measure brightness of new displays

To interpret historical photometric data

To calculate electrical power

What is a limitation of using the blondel unit today?

It is too precise for modern devices

It is an obsolete unit replaced by SI standards

It measures temperature, not luminance

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