Varnish (other)
Varnish is a mixture used primarily to coat wood. Varnish may also refer to: * Varnish (software), a reverse proxy and HTTP accelerator * Jessica Varnish, British track cyclist * Desert varnish, a coating found on exposed rock surfaces in arid environments * Fluoride varnish, applied to the tooth's surface in dentistry * Conformal coating, a type of PCB coating See also Vanish (other) Vanish may refer to: * Vanish (toilet cleaner), a toilet bowl cleaner by S.C. Johnson * Vanish (stain remover), a brand of cloth cleaning product by Reckitt * "Vanish" an episode of the TV series List of Criss Angel Mindfreak episodes, ''Criss Ang ...

Varnish
Varnish is a clear transparent hard protective coating or film. It is not a stain. It usually has a yellowish shade from the manufacturing process and materials used, but it may also be pigmented as desired, and is sold commercially in various shades. Varnish is primarily used as a wood finish where, stained or not, the distinctive tones and grains in the wood are intended to be visible. Varnish finishes are naturally glossy, but satin/semi-gloss and flat sheens are available. History The word "varnish" comes from Mediaeval Latin ''vernix'', meaning odorous resin, itself derived from Middle Greek ''berōnikón'' or ''beroníkē'', meaning amber or amber-colored glass. A false etymology traces the word to the Greek ''Berenice'', the ancient name of modern Benghazi in Libya, where the first varnishes in the Mediterranean area were supposedly used and where resins from the trees of now-vanished forests were sold. Early varnishes were developed by mixing resin—pine sap, for ex ...
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Varnish (software)
Varnish is an HTTP accelerator designed for content-heavy dynamic web sites as well as APIs. In contrast to other web accelerators, such as Squid (software), Squid, which began life as a client-side cache, or Apache HTTP server, Apache and nginx, which are primarily Upstream server, origin servers, Varnish was designed as an HTTP accelerator. Varnish is focused exclusively on HTTP, unlike other proxy servers that often support FTP, SMTP and other network protocols. History The project was initiated by the online branch of the Norwegian tabloid newspaper ''Verdens Gang''. The architect and lead developer is Danish independent consultant Poul-Henning Kamp (a well-known FreeBSD developer), with management, infrastructure and additional development originally provided by the Norwegian Linux consulting company Linpro. The support, management and development of Varnish was later spun off into a separate company, Varnish Software. Varnish is free and open source software, available und ...
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Jessica Varnish
Jessica Varnish (born 19 November 1990) is a former British track cyclist. Varnish was part of the 2014 world record holding European Championships team sprint champions and is a multiple medalist at the World Championships. Biography Jessica Varnish was born in Bromsgrove, Worcestershire on 19 November 1990, the daughter of James "Jim" Varnish, a keen cyclist. She attended South Bromsgrove High School. At the age of 14, Varnish competed unofficially at the 2006 Junior World Championships in Belgium. She took a second off the British 500m standing start record, setting a new time of 37.1 seconds. She made her GB Cycling debut at the Austrian Junior International in January 2006. She became a member of British Cycling's Olympic Development Programme whilst still a junior. Being just 17 at the time, Varnish was selected for the programme a year ahead of the rest of her age group, demonstrating British Cycling's belief in her potential. Her first performance at senior level was in ...
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Desert Varnish
Desert varnish or rock varnish is an orange-yellow to black coating found on exposed rock surfaces in arid environments. Desert varnish is approximately one micrometer thick and exhibits nanometer-scale layering. Rock rust and desert patina are other terms which are also used for the condition, but less often. Formation Desert varnish forms only on physically stable rock surfaces that are no longer subject to frequent precipitation, fracturing or wind abrasion. The varnish is primarily composed of particles of clay along with oxides of iron and manganese. There is also a host of trace elements and almost always some organic matter. The color of the varnish varies from shades of brown to black. It has been suggested that desert varnish should be investigated as a potential candidate for a "shadow biosphere". However, a 2008 microscopy study posited that desert varnish has already been reproduced with chemistry not involving life in the lab, and that the main component is actually ...
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Fluoride Varnish
Fluoride varnish is a highly concentrated form of fluoride which is applied to the tooth's surface, by a dentist, dental hygienist or other health care professional, as a type of topical fluoride therapy. It is not a permanent varnish but due to its adherent nature it is able to stay in contact with the tooth surface for several hours. It may be applied to the enamel, dentine or cementum of the tooth and can be used to help prevent decay, remineralise the tooth surface and to treat dentine hypersensitivity. There are more than 30 fluoride-containing varnish products on the market today, and they have varying compositions and delivery systems. These compositional differences lead to widely variable pharmacokinetics, the effects of which remain largely untested clinically. Fluoride varnishes are relatively new in the United States, but they have been widely used in western Europe, Canada, South Africa and the Scandinavian countries since the 1980s as a dental caries prevention th ...
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Conformal Coating
Conformal coating is a protective coating of thin polymeric film, applied to printed circuit boards (PCB). The coating is named conformal since it ''conforms'' to the contours of the PCB. Conformal coatings are typically applied at 25-250 μm to the electronic circuitry and provides it protection against moisture, dust, chemicals, and temperature extremities. Coatings can be applied in a number of ways, including brushing, spraying, dispensing and dip coating. Furthermore, a number of materials can be used as a conformal coating, such as acrylics, silicones, urethanes and parylene. Each has their own characteristics, making them preferred for certain environments and manufacturing scenarios. Most circuit board assembly firms coat assemblies with a layer of transparent conformal coating, which is lighter and easier to inspect than potting. Reasons for use Conformal coatings are used to protect electronic components from the environmental factors they are exposed to. Examples of ...
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