light quantity

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• Quantity — is a kind of property which exists as magnitude or multitude. It is among the basic classes of things along with quality, substance, change, and relation. Quantity was first introduced as quantum, an entity having quantity. Being a fundamental… …   Wikipedia

• light — light1 [līt] n. [ME liht < OE lēoht, akin to Ger licht < IE base * leuk , to shine, bright > Gr leukos, white, L lux & lumen, light, lucere, to shine, luna, moon, Welsh llug, gleam] 1. a) the form of electromagnetic radiation that acts… …   English World dictionary

• light´en|er — light|en1 «LY tuhn», intransitive verb. 1. to grow light; become brighter: »The sky lightens before the dawn. 2. Figurative. to brighten: »Her face lightened. 3. to become lighter in color. 4. to flash with lightning: »It thundered and lightened… …   Useful english dictionary

• light|en — light|en1 «LY tuhn», intransitive verb. 1. to grow light; become brighter: »The sky lightens before the dawn. 2. Figurative. to brighten: »Her face lightened. 3. to become lighter in color. 4. to flash with lightning: »It thundered and lightened… …   Useful english dictionary

• Light — For other uses, see Light (disambiguation). Visible light redirects here. For other uses, see Visible light (disambiguation) …   Wikipedia

• Light intensity — Several measures of light are commonly known as intensity:*Radiant intensity is a radiometric quantity, measured in watts per steradian (W/sr). *Luminous intensity is a photometric quantity, measured in lumens per steradian (lm/sr), or candela… …   Wikipedia

• Light weight — Weight Weight, n. [OE. weght, wight, AS. gewiht; akin to D. gewigt, G. gewicht, Icel. v[ae]tt, Sw. vigt, Dan. v[ae]gt. See {Weigh}, v. t.] [1913 Webster] 1. The quality of being heavy; that property of bodies by which they tend toward the center… …   The Collaborative International Dictionary of English

• light — light1 lightful, adj. lightfully, adv. /luyt/, n., adj., lighter, lightest, v., lighted or lit, lighting. n. 1. something that makes things visible or affords illumination: All colors depend on light. 2. Physics …   Universalium

• light — light1 [ laıt ] noun *** 1. ) uncount brightness from the sun or from a light, which allows you to see things: The room gets a lot of light in the afternoons. light shines: Light from the street lamps was shining through a gap in the curtains. a… …   Usage of the words and phrases in modern English

• light — I [[t]la͟ɪt[/t]] BRIGHTNESS OR ILLUMINATION ♦♦ lights, lighting, lit, lighted, lighter, lightest (The form lit is the usual past tense and past participle, but the form lighted is also used.) 1) N UNCOUNT: also the N Light is the brightness that… …   English dictionary

• light — I UK [laɪt] / US noun Word forms light : singular light plural lights *** 1) [uncountable] brightness from the sun or from a light, which allows you to see things The room gets a lot of light in the afternoons. light shines: Light from the street …   English dictionary