lumen constant
AlternateUnit
const lumen
The derived unit for luminous flux (lm
).
One Lumen is equal to the amount of light given out through a solid angle by a source of one candela intensity radiating equally in all directions.
Implementation
static const AlternateUnit lumen = AlternateUnit(
'lm',
ProductUnit._(
[RationalPower<Unit>(candela), RationalPower<Unit>(steradian)]));