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Encyclopedia > Coaxial

In geometry, coaxial means that two or more forms share a common axis; it is the three-dimensional linear analog of "concentric". Photo of RG-59 cable, taken and annotated by Heron 20:15, 6 Oct 2004 (UTC). ... Photo of RG-59 cable, taken and annotated by Heron 20:15, 6 Oct 2004 (UTC). ... Coaxial Cable For the weapon, see coaxial weapon. ... Calabi-Yau manifold Geometry (Greek Î³ÎµÏ‰Î¼ÎµÏ„ÏÎ¯Î±; geo = earth, metria = measure) is a part of mathematics concerned with questions of size, shape, and relative position of figures and with properties of space. ... A coordinate axis is one of a set of vectors that defines a coordinate system. ... 2-dimensional renderings (ie. ... Concentric objects share the same center, axis or origin with one inside the other. ...

Coaxial cable, as a common example, has a wire conductor in the center (D) a circumferential outer conductor (B) and an insulating medium called the dielectric (C) separating these two conductors. The outer conductor is usually sheathed in a protective PVC outer jacket (A). Coaxial Cable For the weapon, see coaxial weapon. ... In science and engineering, conductors are materials that contain movable charges of electricity. ...

The dimension and material of the conductors and insulation determine the cables characteristic impedance and attenuation at various frequencies. Attenuation is the reduction in amplitude and intensity of a signal with respect to distance traveled through a medium. ...

In loudspeaker design, coaxial refers to a loudspeaker system in which the individual driver units radiate sound from the same point or axis. This is achieved by placing the high-frequency unit in the centre of the low-frequency driver, rather than having the two radiating from separate spaces. Altec Lansing pioneered the design with their 601 and 604 "duplex" (Altec's term for "coaxial") drivers in the 1940's and Tannoy further popularized the idea with their "dual-concentric" design several years later. The concept has been used by a number of other loudspeaker companies such as KEF, Technics, Thiel, and Geithain, but it still remains a minority exercise due to technical and budgetary considerations despite its theoretical advantages. This article or section needs copy editing for grammar, style, cohesion, tone and/or spelling. ... An old Altec Lansing PC speaker. ... Tannoy Ltd is a British manufacturer of loudspeakers and public-address (PA) systems. ... British loudspeaker manufacturer KEF was founded in 1961 by an electrical engineer named Raymond Cooke in a Nissen hut on the premises of a metal working operation called Kent Engineering & Foundry (hence KEF), on the banks of the River Medway, near Maidstone in Kent. ... Technics is a brand name of Japanese Matsushita Electric Industrial Co. ... Thiel can refer to: American music producer Carl Thiel Swedish banker and art collector Ernest Thiel Swedish entrepreneur Fred Thiel Former Civil War spy and Pinkerton employee George H. Thiel American entrepreneur Peter Thiel American architect and writer Philip Thiel German engineer Walter Thiel (1910-1943) German-American engineer Adolf... Geithain is a town in the Leipziger Land district, in the Free State of Saxony, Germany. ...

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 What is coaxial cable? - a definition from Whatis.com - see also: coax, cable (400 words) Coaxial cable is sometimes used by telephone companies from their central office to the telephone poles near users. Coaxial cable is called "coaxial" because it includes one physical channel that carries the signal surrounded (after a layer of insulation) by another concentric physical channel, both running along the same axis. Coaxial cable was invented in 1929 and first used commercially in 1941.
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