Associations to the word «Lumen»

Wiktionary

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.

Dictionary definition

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".

Wise words

We cannot always control our thoughts, but we can control our words, and repetition impresses the subconscious, and we are then master of the situation.
Florence Scovel Shinn