Apostilb
The apostilb is an obsolete unit of luminance. The SI unit of luminance is the candela per square metre (cd/m2).
The apostilb is an obsolete unit of luminance. The SI unit of luminance is the candela per square metre (cd/m2).
The apostilb is an obsolete unit of luminance. The SI unit of luminance is the candela per square metre (cd/m2).
Source: Wikipedia "Apostilb" · CC BY-SA 4.0
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