Point Brilliance
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2-1 -395
A quantity involved in the visual observation of a source of light when viewed directly from such a distance that the apparent diameter is inappreciable. The point brilliance is measured by the illuminance produced by the source on a plane at the observer's eye normal to the direction of the source.
Symbol: E
Unit: lux (lx)
Reference: C.I.E.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
