Stilb to Watt per Square Centimeter Steradian (at 555 nm) Conversion

Convert between Stilb and Watt per Square Centimeter Steradian (at 555 nm) quickly and accurately.

From Stilb

To Watt per Square Centimeter Steradian (at 555 nm)

W/(cm²·sr)

How to Convert Stilb to Watt per Square Centimeter Steradian (at 555 nm)

Conversion Formula

1 sb = 0.001 W/(cm²·sr)

1 W/(cm²·sr) = 683 sb

Example

Convert 15 sb to W/(cm²·sr):

15 sb = 15 × 0.001 W/(cm²·sr) = 0.022 W/(cm²·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

Watt per Square Centimeter Steradian (at 555 nm)

W/(cm²·sr)

Definition

The Watt per Square Centimeter Steradian at 555 nm is a radiometric unit of luminance that measures radiant power per unit area and solid angle at the peak sensitivity wavelength of the human eye. It is used for precise photometric calculations and laser applications.

History/Origin

This unit was developed for applications requiring precise conversion between radiometric and photometric quantities. The 555 nm wavelength corresponds to the peak sensitivity of the human eye, making it ideal for accurate photometric measurements and laser safety calculations.

Current Use

Used in laser safety, precision photometry, and applications requiring exact conversion between radiometric and photometric units. Essential for laser power measurements, optical system design, and safety calculations where precise luminance values are critical.

Multiplier

6830000

Offset