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plural lux or luxes
: a unit of illumination equal to the direct illumination on a surface that is everywhere one meter from a uniform point source of one candle intensity or equal to one lumen per square meter
Examples of lux in a Sentence
Recent Examples on the Web
To take part, download a free lux meter application.
—Karl Schneider, The Indianapolis Star, 13 Mar. 2024
Eye-tracking purportedly works with indoor lighting as low as 10 lux.
—Scharon Harding, Ars Technica, 13 Oct. 2023
Light – Though offices average 300-500 lux, light needs differ by age, health, and tasks.
—Andrew Mawson, Forbes, 29 Feb. 2024
However, the ambient light sensor is of low sensitivity (at 1 lux level), and the contribution of screen fluctuation is heavily quantized to ≤5 bits per measurement.
—Dan Goodin, Ars Technica, 23 Jan. 2024
Try harnessing the benefits of light therapy by sitting in front of a bright light (10,000 lux, roughly 20 times the power of ordinary indoor lighting) for around 15 minutes each morning.
—Hannah Coates, Vogue, 8 Nov. 2023
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'lux.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Lux.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lux. Accessed 10 Jun. 2024.
Kids Definition
lux
noun
plural lux or luxes
: a unit that is used for measuring the amount of light falling on a surface and that is equal to one lumen per square meter
Medical Definition
lux
noun
plural lux or luxes
: a unit of illumination equal to the direct illumination on a surface that is everywhere one meter from a uniform point source of one candle intensity or equal to one lumen per square meter
called also meter-candle
More from Merriam-Webster on lux
Britannica.com: Encyclopedia article about lux
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