Concentric

Concentric circles

An archery target, featuring evenly spaced concentric circles

Concentric objects share the same center, axis or origin with one inside the other. Circles, tubes, cylindrical shafts, disks, and spheres may be concentric to one another. Concentric objects generally have different radii, as concentric objects with the same radius are equal.

One of the most familiar examples of concentric circles are the evenly spaced circles of a target used in target archery or firearms, and accordingly any concentric design may be called a "target" or a "bullseye" (after the center).

Examples of concentric phenomena

Concentric cable is a cable type used in TN-C-S earthing systems where the combined neutral and earth core completely surrounds the live core(s). This minimizes the risk of completely cutting through the combined neutral and earth without first completely cutting through the live cores.

Concentric muscles contractions are those in which the muscle shortens.

See also

• Coaxial
• Concentric castle
• Eccentricity
• Twinax

External links

• Geometry: Concentric circles demonstration With interactive animation

This geometry-related article is a stub. You can help Wikipedia by expanding it.v · Categories: Geometric centers Geometry stubs Wikimedia Foundation. 2010. Игры ⚽ Нужен реферат? Dartmoor reservoirs Weapons and equipment of the Romanian Armed Forces Look at other dictionaries: concentric — CONCÉNTRIC, Ă, concentrici, ce, adj. (Despre două sau mai multe cercuri, linii curbe etc.) Care au acelaşi centru. – Din fr. concentrique. Trimis de dante, 13.09.2007. Sursa: DEX 98  Concentric ≠ excentric Trimis de siveco, 03.08.2004. Sursa:… …   Dicționar Român Concentric — Con*cen tric, Concentrical Con*cen tric*al, a. [F. concentrique. See {Concenter}.] Having a common center, as circles of different size, one within another. [1913 Webster] Concentric circles upon the surface of the water. Sir I. Newton. [1913… …   The Collaborative International Dictionary of English concentric — [kən sen′trik] adj. [ME concentrik < OFr concentrique < ML concentricus < L com , together + centricus, CENTRIC] having a center in common [concentric circles]: also concentrical concentrically adv. concentricity [kän΄sen tris′ə tē] n …   English World dictionary Concentric — Con*cen tric, n. That which has a common center with something else. [1913 Webster] Its pecular relations to its concentrics. Coleridge. [1913 Webster] …   The Collaborative International Dictionary of English concentric — index coextensive Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary concentric — c.1400, from M.Fr. concentrique, from M.L. concentricus, from com together (see COM (Cf. com )) + centrum circle, center (see CENTER (Cf. center)) …   Etymology dictionary concentric — ► ADJECTIVE ▪ (of circles or arcs) sharing the same centre. DERIVATIVES concentrically adverb concentricity noun. ORIGIN Latin concentricus, from con together + centrum centre …   English terms dictionary Concèntric — Productora y editora de discos en catalán (1964 1973) nacida de una escisión de la compañía discográfica Edigsa. La empresa, fundada por Ermengol Passola y Josep Maria Espinàs [1] , tuvo como objetivo normalizar el catalán a través de la música.… …   Wikipedia Español concentric — [[t]kənse̱ntrɪk[/t]] ADJ: ADJ n Concentric circles or rings have the same centre. Stonehenge is an ancient collection of enormous standing stones, mysteriously arranged in two concentric circles …   English dictionary concentric —    Two or more shapes or forms having the same point at their center. see thumbnail to rightThese three circles are concentric. Concentric contrasts with eccentric: literally, not having the same center, and figuratively, departing from the… …   Glossary of Art Terms 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”