luminous flux unit
- noun
- Specialized
- The standard luminous flux unit is the lumen.
Examples
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The luminous flux unit helps scientists quantify the amount of visible light emitted by a source.
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LED bulbs are rated according to their luminous flux unit output, making comparisons easier.
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In lighting design, the luminous flux unit is essential for determining illumination levels in a room.
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Many light sources are measured in luminous flux units.
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In lighting design, the luminous flux unit is essential for determining illumination levels in a room.
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LED bulbs are rated according to their luminous flux unit output, making comparisons easier.
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The luminous flux unit helps scientists quantify the amount of visible light emitted by a source.
Synonyms
A measure of how much light a lamp or bulb gives
A measure of how much light a bulb or lamp gives
Surface Forms
Morphology
The phrase is directly compositional: 'luminous' (relating to light) + 'flux' (rate or flow of energy/quantity) + 'unit' (a measurement standard) combine to mean a measurement unit for luminous flux. This follows standard noun–noun technical composition and is cross-linguistically transparent, so a B1 learner who knows the constituents should be able to infer the meaning.
Etymology
Luminous flux unit comes from a simple image: luminous means light, flux means flow, and unit is a measure. Imagine light like water flowing and the unit counts how much light flows, so it means 'a unit used to measure how bright a light looks'.