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Disc brake print that page


The disc brake or disk brake is a device for slowing or stopping the rotation of a wheel while it is in motion. A brake disc (or rotor in American English) is usually made of cast iron , but may in some cases be made of composites such as reinforced carbon–carbon or ceramic matrix composites

Corrective lens print that page


presbyopia . Glasses or "spectacles" are worn on the face a short distance in front of the eye. Contact lenses are worn directly on the surface of the eye. Intraocular lenses are surgically implanted most commonly after cataract removal, but recently for purely refractive purposes . Myopia

Football print that page


The various codes of football share the following common elements: Two teams of usually between 11 and 18 players; some variations that have fewer players (five or more per team) are also popular. A clearly defined area in which to play the game. Scoring goals or points , by moving the

Cooling tower print that page


A hyperboloid cooling tower was patented by Frederik van Iterson and Gerard Kuypers in 1918. [ 1 ] The first hyperboloid cooling towers were built in the last 1920s in Liverpool, England to cool water used at a electrical power station that used coal. [ 2 ] Contents 1 Classification

Hot swapping print that page


may be used on either the removable components or the overall system chassis, to prevent operator contact with live powered circuitry, to provide antistatic protection for components being added or removed, or to prevent the removable components from accidentally touching and shorting out

Diffusion of innovations print that page


In 1962 Everett Rogers , a professor of rural sociology published Diffusion of Innovations . In the book, Rogers synthesized research from over 508 diffusion studies and produced a theory for the adoption of innovations among individuals and organizations. The book proposed 4 main elements

Airspace class print that page

Operations may be conducted under IFR, SVFR, or VFR. Entering Class C airspace only requires radio contact with the controlling air traffic authority, but an ATC clearance is ultimately required. Aircraft operating under IFR and SVFR are separated from each other and from flights operating

wikipedia.org | 2011/8/31 8:58:05

Electrosurgery print that page


In electrosurgical procedures, the tissue is heated by an electric current . Although electrical devices may be used for the cauterization of tissue in some applications, electrosurgery is usually used to refer to a quite different method than electrocautery . The latter uses heat conduction

AC power plugs and sockets print that page


example, and some systems are designed such that dangerous voltage is never present on an exposed contact . Exposed contacts are present in some sockets, but are used exclusively for grounding (earthing) . Contents 1 Terminology 2 Two vs. three contacts 2.1 Polarization 3

Glossary of cue sports terms print that page


The following is a glossary of traditional English-language terms used in the three overarching cue sports disciplines : carom (or carambole) billiards referring to the various carom games played on a billiard table without pockets ; pool (pocket billiards) , which denotes a host of games