Stilb to Lumen per Square Foot Steradian Conversion

Convert between Stilb and Lumen per Square Foot Steradian quickly and accurately.

From Stilb

To Lumen per Square Foot Steradian

lm/(ft²·sr)

How to Convert Stilb to Lumen per Square Foot Steradian

Conversion Formula

1 sb = 929.03 lm/(ft²·sr)

1 lm/(ft²·sr) = 0.001 sb

Example

Convert 15 sb to lm/(ft²·sr):

15 sb = 15 × 929.03 lm/(ft²·sr) = 13935.456 lm/(ft²·sr)

Unit Information

Learn about the luminance units you're converting between

Stilb

Definition

The Stilb is a CGS unit of luminance, equal to 10,000 candela per square meter. It was part of the centimeter-gram-second system and is still used in some specialized applications, particularly in older scientific literature and certain technical contexts.

History/Origin

The stilb was originally defined in the CGS system as a unit of luminance, named after the Greek word for brightness. It was widely used in early photometry and lighting science before the adoption of SI units became standard in most applications.

Current Use

Still used in some specialized scientific applications, particularly in older technical specifications and certain branches of photometry. While largely replaced by SI units, it occasionally appears in historical contexts and specialized measurement systems.

Multiplier

10000

Offset

Lumen per Square Foot Steradian

lm/(ft²·sr)

Definition

The Lumen per Square Foot Steradian is an imperial unit of luminance that shows the relationship between luminous flux, area, and solid angle using square feet. It is equivalent to 10.7639104167 candela per square meter.

History/Origin

This unit was developed for use in countries employing imperial measurements, providing a way to express luminance in terms of square feet while maintaining the relationship to luminous flux and solid angle. It bridges metric and imperial systems in lighting applications.

Current Use

Used in lighting design and engineering in countries using imperial units, particularly in architectural lighting and display specifications. Common in applications where square footage is the standard area measurement and precise luminance control is required.

Multiplier

10.764

Offset