Lumen Definition & Meaning - Merriam-Webster
The lumen is a measure of "luminous flux;" a standard 100-watt lightbulb gives off 1500–1700 lumens. Luminous flux indicates how much light is actually perceived by the human eye.
What Are Lumens? Lumens Chart & Light Bulb Facts | Lumens
2022年1月26日 · Learn the definition of lumens, the difference between lumens vs. watts, easy to ready lumens chart, new light bulb laws and more at Lumens. We'll show you how lumens are measured, an easy way to translate watts to lumens and why all these changes are a good thing.
Lumen (unit) - Wikipedia
The lumen (symbol: lm) is the unit of luminous flux, a measure of the perceived power of visible light emitted by a source, in the International System of Units (SI).
LUMEN | English meaning - Cambridge Dictionary
LUMEN definition: 1. a unit for measuring the amount of light something produces: 2. the inside space of a…. Learn more.
LUMEN | definition in the Cambridge English Dictionary
LUMEN meaning: 1. a unit for measuring the amount of light something produces: 2. the inside space of a…. Learn more.
Lumen - definition of lumen by The Free Dictionary
One lumen is equal to the amount of light that passes through a given area (shaped like a cone) that is illuminated by a light with a brightness of one candela.
LUMEN definition and meaning | Collins English Dictionary
3 meanings: 1. the derived SI unit of luminous flux; the flux emitted in a solid angle of 1 steradian by a point source having.... Click for more definitions.
Lumen - Definition, Meaning & Synonyms - Vocabulary.com
2024年12月20日 · The lumen is a unit of measurement for the brightness of light. If a light bulb is blindingly bright, it produces a lot of lumens.
Lumen | definition of lumen by Medical dictionary
1. the cavity or channel within a tube or tubular organ, as a blood vessel or the intestine. 2. the SI unit of rate of flow of radiant energy, specifically that of the visible spectrum. adj., adj lu´minal.
LUMEN Definition & Meaning | Dictionary.com
The SI derived unit used to measure the amount of light passing through a given area per second. One lumen is equal to the luminous flux passing per unit solid angle from a light source with a …
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