Meaning of apostilb | Babel Free
Definitions
a unit of luminance, being the luminance of a perfectly diffusing surface emitting light at the rate of ¹⁄_π candela per square metre. Also known as a blondel.
CEFR level
B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
This word is part of the CEFR B2 vocabulary — upper intermediate level.