apostilb
Noun
Meaning
apostilb (plural apostilbs)
(physics) a unit of luminance, being the luminance of a perfectly diffusing surface emitting light at the rate of ⁄π candela per square metre. Also known as a blondel.
Noun
apostilb (plural apostilbs)
(physics) a unit of luminance, being the luminance of a perfectly diffusing surface emitting light at the rate of ⁄π candela per square metre. Also known as a blondel.