Rayleigh
Enter a value and select units to convert.
Switch fL to R
Rayleigh Unit Table
A list of units symbol and data.
From RTo fLAll conversion
1 R0.2918635079290997 fL
2 R0.5837270158581994 fL
3 R0.8755905237872992 fL
4 R1.1674540317163988 fL
5 R1.4593175396454985 fL
6 R1.7511810475745984 fL
7 R2.0430445555036982 fL
8 R2.3349080634327977 fL
9 R2.6267715713618975 fL
10 R2.918635079290997 fL
Description

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.

Footlambert (fL): Imperial Unit of Luminance

The footlambert is a non-SI unit of luminance used primarily in the United States, particularly in the cinema and projection industries. One footlambert equals approximately 3.426 candelas per square meter. This unit measures the brightness of images projected onto screens, ensuring optimal viewing conditions in theaters and auditoriums.

Professionals in the film and display sectors rely on footlambert measurements to calibrate projection systems and maintain consistent image quality. Understanding and applying this unit is essential for achieving the desired visual experience in various viewing environments.

Complete list of conversion for Rayleigh
Rayleigh (R)

1 Rayleigh = 1 Candela

Convert 2 R → cd

1 Rayleigh = 1 Candlepower

Convert 2 R → cp

1 Rayleigh = 1 Lumen

Convert 2 R → lm

1 Rayleigh = 1 Lux

Convert 2 R → lx

1 Rayleigh = 0.09290312990644656 Footcandle

Convert 2 R → fc

1 Rayleigh = 0.0001 Phot

Convert 2 R → ph

1 Rayleigh = 1 Candela per square meter

Convert 2 R → cd/m²

1 Rayleigh = 1 Nit

Convert 2 R → nt

1 Rayleigh = 0.0001 Stilb

Convert 2 R → sb

1 Rayleigh = 0.0003141592653587727 Lambert

Convert 2 R → L

1 Rayleigh = 0.2918635079290997 Footlambert

Convert 2 R → fL

1 Rayleigh = 1 Lumen second

Convert 2 R → lm·s

1 Rayleigh = 1 Lux second

Convert 2 R → lx·s