Bril (unit)
Encyclopedia
The bril is an old, non-SI
, unit of luminance
. The SI unit of luminance is the candela per square metre.
Si
Si, si, or SI may refer to :- Measurement, mathematics and science :* International System of Units , the modern international standard version of the metric system...
, unit of luminance
Luminance
Luminance is a photometric measure of the luminous intensity per unit area of light travelling in a given direction. It describes the amount of light that passes through or is emitted from a particular area, and falls within a given solid angle. The SI unit for luminance is candela per square...
. The SI unit of luminance is the candela per square metre.
Unit conversions
One bril is equal to:
candela per square metre- 10-4 skots
- 10-11 lambertsLambert (unit)The lambert is a non-SI unit of luminance named for Johann Heinrich Lambert , a Swiss mathematician, physicist and astronomer. A related unit of luminance, the foot-lambert, is used in the lighting, cinema and flight simulation industries...
- 10-7 apostilbApostilbThe apostilb is an old unit of luminance, which was withdrawn from use in 1978. The SI unit of luminance is the candela per square metre . In 1942 it was proposed to rename the apostilb the blondel, after the French physicist André Blondel...
s 
stilbsStilb (unit)The stilb is the CGS unit of luminance for objects that are not self-luminous. It is equal to one candela per square centimeter or 104 nits . The name was coined by the French physicist André Blondel around 1920. It comes from the Greek word stilbein meaning "to glitter".It was in common use in...
(candelaCandelaThe candela is the SI base unit of luminous intensity; that is, power emitted by a light source in a particular direction, weighted by the luminosity function . A common candle emits light with a luminous intensity of roughly one candela...
per square centimetre)- about 9.29×10-9 foot-lamberts