Convert 2 Rayleigh to Stilb - Light

A list of units symbol and data.
From R	To sb	All conversion
1 R	0.0001 sb
2 R	0.0002 sb
3 R	0.0003 sb
4 R	0.0004 sb
5 R	0.0005 sb
6 R	0.0006 sb
7 R	0.0007 sb
8 R	0.0008 sb
9 R	0.0009 sb
10 R	0.001 sb

Rayleigh (R): Specialized Unit for Atmospheric Light Emissions

The rayleigh is a non-SI unit used to measure the faint emissions of light in the upper atmosphere, such as those produced by auroras or airglow. One rayleigh corresponds to 10¹⁰ photons per square meter per second along a vertical column. This unit is especially important in geophysics, atmospheric science, and astrophysics for quantifying extremely low levels of light that are invisible to the human eye but detectable by scientific instruments.

Rayleigh measurements are essential for studying natural light phenomena in the Earth's mesosphere and thermosphere. These emissions play a crucial role in understanding the impact of solar activity on Earth, helping scientists monitor space weather and its effects on satellite communications and navigation systems. By quantifying these subtle luminous occurrences, the rayleigh contributes to our broader understanding of planetary atmospheres and cosmic interactions.

Stilb (sb): CGS Unit of Luminance

The stilb is a unit of luminance in the CGS system, where one stilb equals 10,000 candelas per square meter. Although it is not commonly used in contemporary applications, the stilb serves as a historical unit for measuring high-intensity luminance, particularly in scientific research and specialized fields.

While the SI unit cd/m² has largely replaced the stilb, knowledge of this unit is useful when interpreting older scientific data or working within specific contexts that utilize CGS units. Understanding the conversion between stilb and cd/m² ensures accurate communication and analysis of luminance measurements.