Lumen Meaning in English
word
التعريف
A lumen is a unit used to measure the amount of visible light produced by a source, such as a bulb. In biology, 'lumen' also refers to the inside space of a tube, like a blood vessel or an intestine.
الاستخدام والفروق الدقيقة
In lighting, 'lumen' is the standard way to compare bulb brightness (not watts). In biology, 'lumen' is countable and refers to hollow spaces inside organs or vessels. Don't confuse with 'lumens' (plural) or 'luminary' (inspirational person). Formal and technical word, rarely used in casual conversation.
جمل نموذجية
This bulb gives off 800 lumens of light.
basic
We learned about the lumen of the intestine in science class.
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A flashlight with more lumens is brighter.
basic
If you want a brighter room, check the lumens on the package before buying a bulb.
natural
Doctors examine the lumen of arteries to check for blockages.
natural
Some projectors boast over 3,000 lumens for impressive brightness, even in daylight.
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