Footlambert
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Switch R to fL
Footlambert Unit Table
A list of units symbol and data.
From fLTo RAll conversion
1 fL3.4262591 R
2 fL6.8525182 R
3 fL10.2787773 R
4 fL13.7050364 R
5 fL17.1312955 R
6 fL20.5575546 R
7 fL23.9838137 R
8 fL27.4100728 R
9 fL30.836331899999998 R
10 fL34.262591 R
Description

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.

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.

Complete list of conversion for Footlambert
Footlambert (fL)

1 Footlambert = 3.4262591 Candela

Convert 2 fL → cd

1 Footlambert = 3.4262591 Candlepower

Convert 2 fL → cp

1 Footlambert = 3.4262591 Lumen

Convert 2 fL → lm

1 Footlambert = 3.4262591 Lux

Convert 2 fL → lx

1 Footlambert = 0.3183101942604446 Footcandle

Convert 2 fL → fc

1 Footlambert = 0.00034262591 Phot

Convert 2 fL → ph

1 Footlambert = 3.4262591 Candela per square meter

Convert 2 fL → cd/m²

1 Footlambert = 3.4262591 Nit

Convert 2 fL → nt

1 Footlambert = 0.00034262591 Stilb

Convert 2 fL → sb

1 Footlambert = 0.0010763910417848097 Lambert

Convert 2 fL → L

1 Footlambert = 3.4262591 Lumen second

Convert 2 fL → lm·s

1 Footlambert = 3.4262591 Lux second

Convert 2 fL → lx·s

1 Footlambert = 3.4262591 Rayleigh

Convert 2 fL → R