World Wide Web

The collection of all servers that make Web content available on the Internet.
The graphical Internet hypertext service that uses the HTTP protocol to retrieve World Wide Web pages and other data from World Wide Web servers. Pages on the World Wide Web usually contain hyperlinks to other pages or to multimedia files.
People usually interact with the part of the Internet called the World Wide Web (WWW or the Web). The line between the Web and the Internet is somewhat blurry, and the two terms are often used interchangeably. Basically, the Web is a subpart of the Internet with the capacity to handle multimedia (text, graphic, video and sound) information. The Web consists of documents stored on computers around the world that people around the world can access who want to view them. These documents are called Web pages. (Also referred to as Home pages, Web documents, and Web sites.)
The total set of interlinked hypertext documents residing on HTTP servers all over the world. Documents on the World Wide Web are called pages or Web pages, which are written in HTML (Hypertext Markup Language). Web pages are identified by URLs (Uniform Resource Locators) that specify the particular computer and path name by which a file can be accessed, and transmitted from node to node to the end user under HTTP (Hypertext Transfer Protocol). Web pages may contain text in a variety of fonts and styles, pictures, graphics, movie clips, sounds, as well as small, embedded software programs that are executed when a site visitor activates them by clicking a hyperlink. Site visitors may also be able to download files and send messages to other users via e-mail by using links on a Web page. The World Wide Web was developed by Tim Berners-Lee in 1989 for the European Laboratory for Particle Physics (CERN).