Associations to the word «Lumen»

LUMEN, noun. (physics) In the International System of Units, the derived unit of luminous flux; the light that is emitted in a solid angle of one steradian from a source of one candela. Symbol: lm.

LUMEN, noun. (anatomy) The cavity or channel within a tube or tubular organ.

LUMEN, noun. (botany) The cavity bounded by a plant cell wall.

LUMEN, noun. (medicine) The bore of a tube such as a hollow needle or catheter.

LUMEN METHOD, proper noun. A technique to calculate the light level in a room, based on a series of calculations using horizontal illuminance criteria to establish a uniform luminaire layout in a space.

LUMEN SECOND, noun. (physics) A derived SI unit of luminous energy.

LUMEN, noun. A unit of luminous flux equal to the amount of light given out through a solid angle of 1 steradian by a point source of 1 candela intensity radiating uniformly in all directions.

LUMEN, noun. A cavity or passage in a tubular organ; "the lumen of the intestine".