www

computer network consisting of a collection of internet sites that offer text and graphics and sound and animation resources through the hypertext transfer protocol

For the world's first web browser, see WorldWideWeb. ]]The World Wide Web ("WWW", "W3", or simply "Web") is an information space in which the items of interest, referred to as resources, are identified by global identifiers called Uniform Resource Identifiers (URIs). The term is often mistakenly used as a synonym for the Internet, but the Web is actually a service that operates ''over'' the Internet.

Basic terms - Hypertext is viewed using a program called a web browser which retrieves information resources, such as web pages and other computer files, from web servers and displays them, typically on a computer displaycomputer monitor. One can then follow hyperlinks in each page to other resources on the World Wide Web of information that these hyperlinks produce. It is also possible, for example by filling in and HTML_element#Formssubmitting Form (document)web forms, to send information back to the server to interact with it. The act of following hyperlinks is often called ''"browsing"'' or ''"surfing"'' the Web. Web pages are often arranged in collections of related material called "websites." The phrase "surfing the Internet" was first popularized in print by Jean Armour Polly, a librarian, in an article called ''Surfing the INTERNET'', published in the Wilson Library Bulletin in June, 1992. Although Polly may have developed the phrase independently, slightly earlier uses of similar terms have been found on the Usenet from 1991 and 1992, and some recollections claim it was also used verbally in the hacker community for a couple years before that. Polly is famous as "NetMom" in the history of the Internet.For more information on the distinction between the World Wide Web and the Internet itself — as in everyday use the two are sometimes confused — see Dark internet where this is discussed in more detail.Although the English (language)English word ''worldwide'' is normally written as one word (without a space or hyphen), the proper name World Wide Web and abbreviation WWW are now well-established even in formal English. The earliest references to the Web called it the WorldWideWeb (an example of computer programmers' fondness for intercaps) or the ''World-Wide Web'' (with a hyphen, this version of the name is the closest to normal English usage).Interestingly, "WWW" is one of the few acronyms that takes longer to say than what it is "short" for.

How the Web works - When you want to access a web page, or other "resource", on the World Wide Web, you normally begin either by typing the URL of the page into your browser, or by following a hypertext link to that page or resource. The first step, behind the scenes, is for the server-name part of the URL to be resolved into an IP address by the global, distributed Internet database known as the Domain name system or DNS. The next step is for an HTTP request to be sent to the web server working at that IP address for the page required. In the case of a typical web page, the HTML text, graphics and any other files that form a part of the page will be requested and returned to the client in quick succession.The web browser's job is then to rendering (computer graphics)render the page as described by the HTML, Cascading Style SheetsCSS and other files received, incorporating the images, links and other resources as necessary. This produces the on-screen 'page' that you see.Most web pages will, themselves, contain hyperlinks to other relevant and informative pages and perhaps to downloads, source documents, definitions and other web resources. Such a collection of useful, related resources, interconnected via hypertext links, is what has been dubbed a 'web' of information. Making it available on the Internet produced what Tim Berners-Lee first called the World Wide Web in the early 1990s w3.org w3.org.

Origins - ''See also: History of the Internet#World Wide WebHistory of the Internet'' The underlying ideas of the Web can be traced as far back as 1980, when Tim Berners-Lee and Robert Cailliau built ENQUIRE (referring to ''Enquire Within Upon Everything'', a book Berners-Lee recalled from his youth). While it was rather different from the Web we use today, it contained many of the same core ideas (and even some of the ideas of Berners-Lee's next project after the WWW, the Semantic Web). In March 1989, Tim Berners-Lee wrote "Information Management: A Proposal", which referenced ENQUIRE and described a more elaborate information management system. w3.org He published a more formal proposal for the actual World Wide Web on November 12, 1990 w3.org. Implementation began on November 13, 1990 when Berners-Lee wrote the first Web page w3.org on a NeXT workstation. During the Christmas holiday of that year, Berners-Lee built all the tools necessary for a working Web w3.org: the WorldWideWebfirst Web browser (which was a Web editor as well) and the first Web server. On August 6, 1991, he posted a groups.google.com - short summary of the World Wide Web project on the !alt.hypertext? newsgroup. This date also marked the debut of the Web as a publicly available service on the Internet. The crucial underlying concept of hypertext originated with older projects from the 1960s, such as Ted Nelson's Project Xanadu and Douglas Engelbart's NLSoN-Line System (NLS). Both Nelson and Engelbart were in turn inspired by Vannevar Bush's microfilm-based "memex," which was described in the 1945 essay "As We May Think". Berners-Lee's brilliant breakthrough was to marry hypertext to the Internet. In his book ''Weaving The Web,'' he explains that he had repeatedly suggested that a marriage between the two technologies was possible to members of ''both'' technical communities, but when no one took up his invitation, he finally tackled the project himself. In the process, he developed a system of globally unique identifiers for resources on the Web and elsewhere: the Uniform Resource Identifier.The World Wide Web had a number of differences from other hypertext systems that were then available.

The WWW required only unidirectional links rather than bidirectional ones. This made it possible for someone to link to another resource without action by the owner of that resource. It also significantly reduced the difficulty of implementing Web servers and browsers (in comparison to earlier systems), but in turn presented the chronic problem of broken links.

Unlike certain applications such as HyperCard or Gopher_protocolGopher, the World Wide Web was non-proprietary, making it possible to develop servers and clients independently and to add extensions without licensing restrictions.On April 30, 1993, CERN intranet.cern.ch - announced that the World Wide Web would be free to anyone, with no fees due.

Web standards - At its core, the Web is made up of three standards:

the ''Uniform Resource Identifier'' (Uniform Resource IdentifierURI), which is a universal system for referencing resources on the Web, such as Web pages;

the ''HyperText Transfer Protocol'' (HTTP), which specifies how the browser and server communicate with each other; and

the ''HyperText Markup Language'' (HTML), used to define the structure and content of hypertext documents.Berners-Lee now heads the World Wide Web Consortium (W3C), which develops and maintains these and other standards that enable computers on the Web to effectively store and communicate different forms of information.

Java and JavaScript - Another significant advance in the technology was Sun MicrosystemsSun Microsystems' Java programming language. It initially enabled Web servers to embed small programs (called applets) directly into the information being served, and these applets would run on the end-user's computer, allowing faster and richer user interaction. Eventually, it came to be more widely used as a tool for generating complex server-side content as it is requested. Java never gained as much acceptance as Sun had hoped as a platform for client-side applets for a variety of reasons, including lack of integration with other content (applets were confined to small boxes within the rendered page) and poor perfomance (particularly start up delays) of Java virtual machineVMs on PC hardware of that time.JavaScript, however, is a Scripting programming languagescripting language that was developed for Web pages. The standardized version is ECMAScript. While its name is similar to Java, it was developed by Netscape Communications CorporationNetscape and not Sun Microsystems, and it has almost nothing to do with Java, with the only exception being that like Java, its syntax is derived from the C programming language. Like Java, Javascript is also Object-oriented programmingobject oriented but like C plus plusC++ and unlike Java, it allows mixed code - both object oriented as well as procedural programmingprocedural. In conjunction with the Document Object Model, JavaScript has become a much more powerful language than its creators originally envisioned. Sometimes its usage is expressed under the term Dynamic HTML (DHTML), to emphasize a shift away from ''static'' HTML pages.

Sociological implications - The Web, as it stands today, has allowed global interpersonal exchange on a scale unprecedented in human history. People separated by vast distances, or even large amounts of time, can use the Web to exchange — or even mutually develop — their most intimate and extensive thoughts, or alternately their most casual attitudes and spirits. Emotional experiences, political ideas, cultural customs, musical idioms, business advice, artwork, photographs, literature, can all be shared and disseminated digitally with less individual investment than ever before in human history. Although the existence and use of the Web relies upon material technology, which comes with its own disadvantages, its information does not use physical resources in the way that librarylibraries or the printing press have. Therefore, propagation of information via the Web (via the Internet, in turn) is not constrained by movement of physical volumes, or by manual or material copying of information. And by virtue of being digital, the information of the Web can be searched more easily and efficiently than any library or physical volume, and vastly more quickly than a person could retrieve information about the world by way of physical travel or by way of mail, telephone, telegraphytelegraph, or any other communicative medium.The Web is the most far-reaching and extensive medium of personal exchange to appear on Earth. It has probably allowed many of its users to interact with many more groups of people, dispersed around the planet in time and space, than is possible when limited by physical contact or even when limited by every other existing medium of communication combined.Because the Web is global in scale, some have suggested that it will nurture mutual understanding on a global scale. By definition or by necessity, the Web has such a massive potential for social exchange, it has the potential to nurture empathy and symbiosis, but it also has the potential to incite belligerence on a global scale, or even to empower demagogydemagogues and repressive regimes in ways that were historically impossible to achieve.

Publishing web pages - The Web is available to individuals outside mass media. In order to "publish" a web page, one does not have to go through a publisher or other media institution, and potential readers could be found in all corners of the globe.Unlike books and documents, hypertext does not have a linear order from beginning to end. It is not broken down into the hierarchy of chapters, sections, subsections, etc.Many different kinds of information are now available on the Web, and for those who wish to know other societies, their cultures and peoples, it has become easier. When travelling in a foreign country or a remote town, one might be able to find some information about the place on the Web, especially if the place is in one of the developed countries. Local newspapers, government publications, and other materials are easier to access, and therefore the variety of information obtainable with the same effort may be said to have increased, for the users of the Internet. Although some websites are available in multiple languages, many are in the local language only. Also, not all software supports all special characters, and RTL languages. These factors would challenge the notion that the World Wide Web will bring a unity to the world.The increased opportunity to publish materials is certainly observable in the countless personal pages, as well as pages by families, small shops, etc., facilitated by the emergence of free web hosting services.

Statistics - According to a 2001 study brightplanet.com, there were more than 550 billion documents on the Web, mostly in the "Deep webinvisible Web". A 2002 survey of 2,024 million web pages netz-tipp.de determined that by far the most Web content was in English: 56.4%; next were pages in German (7.7%), French (5.6%) and Japanese (4.9%). There seem to be an increase in Chinese sites since however. A more recent study cs.uiowa.edu which used web searches in 75 different languages to sample the Web determined that there were over 11.5 billion web pages in the publically-indexable Web as of January 2005.

Speed issues - Frustration over congestion issues in the Internet infrastructure and the high latency that results in slow browsing has lead to an alternative name for the World Wide Web: the ''World Wide Wait''. Speeding up the Internet is an ongoing discussion over the use of peering and Quality_of_serviceQoS technologies. Other solutions to reduce the World Wide Wait can be found on w3.org - W3C.

Academic conferences - The major academic event covering the WWW is the World Wide Web series of conferences, promoted by iw3c2.org - IW3C2. There is a iw3c2.org - list with links to all conferences in the series.

Pronunciation of "www" - Most English languageEnglish-speaking people pronounce the 9-syllable letter sequence ''www'' used in some domain names for websites as "double U, double U, double U" despite shorter options like "triple double U" being available.Some languages do not have the letter ''w'' in their alphabet (for example, Italian languageItalian), which leads some people to pronounce ''www'' as "vou, vou, vou." In some languages (such as Czech languageCzech and Finnish languageFinnish) the ''w'' is substituted by a ''v'', so Czechs pronounce ''www'' as "veh, veh, veh" rather than the correct but much longer pronunciation "dvojité veh, dvojité veh, dvojité veh;" the same applies to Finnish, where the correct pronunciation would be "kaksoisvee, kaksoisvee, kaksoisvee." Also in Norwegian, and similariliy in Swedish: Instead of the correct "dobbel-ve, dobbel-ve, dobbel-ve" it is pronounced "ve, ve, ve". The pronunciation of "ve" instead of "dobbel-ve" is also used in other abbreviations. Several other languages (e.g. German languageGerman, Dutch languageDutch etc.) simply pronounce the Wletter W as a single syllable, so this problem doesn't occur.Depending on how the domain and web server are set up, a ''www'' website can often be accessed without entering the "www.", as long as the ".com" or other appropriate top-level domain is appended. Even this is not always necessary as some browsers will automatically try adding "www." and ".com" to typed URIs if a web page isn't found without them.In English pronunciation, saying the full words "World Wide Web" takes one-third as many syllables as saying the Acronym and initialisminitialism "www". According to Berners-Lee, others mentioned this fact as a reason to choose a different name, but he persisted.In New Zealand and occasionally in Australia, "www" is often pronounced "dub-dub-dub". This is widely accepted (for example its use in TV commercials appears standard) and is more concise than some other renditions in English.In the Southern United States the two syllable pronunciation of the letter ''w'' "dub-ya" is often used, resulting in dub-ya-dub-ya-dub-ya, even when spoken by persons who would normally use the "standard English" three syllable pronunciation for a single letter ''w''.

See also -

History of the Internet

Semantic Web

Media studies

Smartphone

List of websites

Search engine

Web directory

Hypertext

First image on the Web

Streaming media

Cyberzine

Web 2.0, term often applied to perceived ongoing transition of the WWW from a collection of websites to a full-fledged computing platform serving web applications

References -

Fielding, R.; Gettys, J.; Mogul, J.; Frystyk, H.; Masinter, L.; Leach, P.; Berners-Lee, T. Title=Hypertext Transfer Protocol - HTTP/1.1 Publisher=Information Sciences Institute PublishYear=June 1999 Version=Request For Comments 2616 !URL=ftp://ftp.isi.edu/in-notes /rfc2616.txt?

Berners-Lee, Tim; Bray, Tim; Connolly, Dan; Cotton, Paul; Fielding, Roy; Jeckle, Mario; Lilley, Chris; Mendelsohn, Noah; Orchard, David; Walsh, Norman; Williams, Stuart Title=Architecture of the World Wide Web, Volume One Publisher=W3C PublishYear=December 15, 2004 Version=Version 20041215 !URL=http://www.w3.org/TR/webar ch/?

Polo, Luciano title=World Wide Web Technology Architecture: A Conceptual Analysis publisher= publishyear=2003 work=New Devices !url=http://newdevices.com/publ icaciones/www/? date=July 31 year=2005

External links -

dmoz.org - Open Directory - Computers: Internet: Web Design and Development

adstockweb.com - The World Wide Web Virtual Library: Web Design from the World Wide Web Virtual Library

w3.org - World Wide Web, the first known web page.

mit.edu - Internet Statistics: Growth and Usage of the Web and the Internet

w3.org - Design Issues for The World Wide Web

experienced-people.co.uk - Alternative WWW and webmaster glossary (humor)

Standards - The following is a cursory list of the documents that define the World Wide Web's three core standards:

Uniform Resource Locator (URL)

*RFC 1738, URL Specification (updated by RFC 3986 "Uniform Resource Identifier (URI): Generic Syntax" in January 2005)

Hypertext Markup Language (HTML)

* w3.org - Internet Draft, HTML version 1

*RFC 1866, HTML version 2.0

*w3.org - HTML 3.2 Reference Specification

*w3.org - HTML 4.01 Specification

*w3.org - Extensible HTML (XHTML) Specification

HyperText Transfer Protocol (HTTP) DEBUG REDIRECT (world wide web)

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Microsoft Corporation
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