Index: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Home > Lumen (unit)

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 [ }\|action=edit}} Edit }]
Quantity	SI unit	Symbol	Notes
Luminous intensity	candela	cd
Luminous flux	lumen or ( candela · steradian )	lm
Luminance	candela / square metre	cd/ m²
Illuminance	lux or (lumen / square metre)	lx
Luminous efficacy	lumens per watt	lm/ w

This article is a stub. You can help Wikipedia by [ ṣlocalurl: : |action=edit}} expanding it].

Physical quantity Optics

Read more »

<Hide>

Topics: Lumen (unit), Lumen Gentium...

Lumen GentiumOne of the principal documents of the Second Vatican Council, Lumen Gentium is the Dogmatic Constitution on the Church . The name means "light of the nations" in Latin and is from the first line of the document, as is customary with Catholic Church docume

LumenIn anatomy, the lumen is the cavity or channel within a tube or tubular structure, such as the vascular lumen of a blood vessel, along which blood flows. In astronomy, 141 Lumen is the name of an asteroid discovered by the French astronomer Paul Henry in

Lumen (unit)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.

Non User