Lumen_(unit) Lumen_(unit)

Lumen (unit) - Definition and Overview
Related Words: Kp, Abcoulomb, Ace, Ampere, Army, Article, Atom, Battalion, Battery, Being, Body, Brigade

For alternate uses of the term lumen, see lumen

In physics, specifically photometry (optics), the lumen (symbol: lm) is the SI derived unit of luminous flux. It is the amount of light that falls on a unit area at unit distance from a source of one candela.

SI light units

SI light units

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Quantity SI unit Symbol Notes
Luminous energy joule J
Luminous flux lumen or ( candela · steradian ) lm also called Luminous power
Luminous intensity candela cd
Luminance candela / square metre cd/m2 also called Luminosity
Illuminance lux or (lumen / square metre) lx
Luminous efficacy lumens per watt lm/w

Example Usage of (unit)
Cadburylove: @Twinkle_SK And And is that your unit view or your house room view? I am jealous you get to wakeup feasting on such a view
cnwholesaler: Genuine Xerox 016 1662 00 Color Toner Imaging Drum Unit:  Genuine brand new Xerox 016 1662 00 color toner .. http://bit.ly/6cLPG6
artfulreggie: I seriously cannot stand it when people use the $ as a suffix. It's notation, not a unit. USD, CAD, JPY, and EUR are units.
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