lumen
noun
the unit of luminous flux, equal to the luminous flux emitted in a unit solid angle by a point source of one candle intensity. lm
lumens
-
pluralof lumen.plural
The grammatical form denoting more than one person, place, thing, or idea.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
While most kitchen lighting is built in, it’s possible to bring a few extra lumens to dark corners, and an extra dash of style, with plug-in lamps.
From Seattle Times ● Jan. 8, 2024
In the early 2000s, white LEDs only offered around 20 lumens per watt, says Paul Scheidt, senior product marketing manager at Cree LED, a major lighting manufacturer.
From BBC ● Dec. 18, 2023
Most incandescent bulbs can only create about 15 lumens with 1 watt, so they don’t meet the guidelines.
From NewsForKids.net ● Aug. 17, 2023
The new efficiency standard announced by the Biden administration requires light bulbs to meet a minimum standard of producing 45 lumens per watt.
From New York Times ● Aug. 1, 2023
This is the satisfactory unit, for it measures total quantity of light, and luminous efficiencies may be expressed in terms of lumens per watt, lumens per cubic foot of gas per hour, etc.
From Artificial Light Its Influence upon Civilization by Matthew Luckiesh
