focal centre length

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• focal length — n technical the distance between the centre of a lens and the focal point …   Dictionary of contemporary English

• focal length — UK / US noun [countable] Word forms focal length : singular focal length plural focal lengths physics the distance from the centre of a lens or mirror to its focal point …   English dictionary

• focal length — noun the distance from a lens to its focus • Syn: ↑focal distance • Hypernyms: ↑distance * * * noun, pl ⋯ lengths [count] technical : the distance from the surface of a lens to the point of focus (sense 3) * * * ˌfocal ˈlength [focal length] …   Useful english dictionary

• focal length — /ˈfoʊkəl lɛŋθ / (say fohkuhl length) noun 1. (of a mirror or lens) the distance from the optical centre to the focal point. 2. (of a telescope) the distance between the object lens and its corresponding focal plane …  

• focal — adj. of, at, or in terms of a focus. Phrases and idioms: focal distance (or length) the distance between the centre of a mirror or lens and its focus. focal plane the plane through the focus perpendicular to the axis of a mirror or lens. focal… …   Useful english dictionary

• focal length — noun (C) technical the distance between the centre of a lens and the focal point …   Longman dictionary of contemporary English

• focal length — noun the distance between the centre of a lens or curved mirror and its focus. ↘the equivalent distance in a compound lens or telescope …   English new terms dictionary

• Science Centre, Singapore — The Science Centre Singapore (Abbreviation: SCS, Chinese: 新加坡科学馆), previously known as Singapore Science Centre [ [http://www.science.edu.sg/ssc/upload/mid1/type9/cat0/7974 312 Media%20Release%20 %20The%20Singapore%20Science%20Centre%20turns%2030!… …   Wikipedia

• Islamic arts — Visual, literary, and performing arts of the populations that adopted Islam from the 7th century. Islamic visual arts are decorative, colourful, and, in religious art, nonrepresentational; the characteristic Islamic decoration is the arabesque.… …   Universalium

• painting — /payn ting/, n. 1. a picture or design executed in paints. 2. the act, art, or work of a person who paints. 3. the works of art painted in a particular manner, place, or period: a book on Flemish painting. 4. an instance of covering a surface… …   Universalium

• photography, technology of — Introduction       equipment, techniques, and processes used in the production of photographs.  The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …   Universalium