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luminous flux density ILUMINA.

total luminous flux ILUMINA.

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inglés
One lumen is defined as the luminous flux of light produced by a light source that emits one candela of luminous intensity over a solid angle of one steradian.
en.wikipedia.org
It reaches 80% of its final luminous flux within 20 seconds, and the lamp can be restarted approximately five minutes after a power cut.
en.wikipedia.org

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