What is a Wallpaper

A wallpaper is material used to cover and decorate interior walls.

 Wallpaper may also refer to:

• Computer wallpaper, background picture on computer screens

• Mobile wallpaper, background picture on cellular or mobile phones

• Wallpaper (magazine) (since 1996), cultural magazine

• Wallpaper group, two-dimensional repeated pattern analysis

• Stealth wallpaper, signal-shielding wallpaper to prevent electronic eavesdropping

• Wallpaper effect, stereoscopic illusion in which wallpaper acts as an autostereogram

• Wallpaper. (Musician), an Oakland based music duo

Wallpaper History

Original computer wallpaper pattern, as used in Xerox's Officetalk and Star; actual size.

                                          No higher resolution available 

The first use of a distinguishable background in conjunction with overlapping windows was in an experimental office system, Officetalk, developed in 1975 at Xerox PARC on the Alto. Prior to that, the white backgrounds to overlapping windows (for example, in Smalltalk) could be difficult to distinguish from window interiors. The pattern used in Officetalk produced a 25% gray, using dots two pixels high to avoid flicker on the Alto's interlaced screen. The same pattern was adopted for the Xerox Star.

 

Apple used a similar gray background for their Lisa and Macintosh. However, since these machines had non-interlaced screens it was possible to use a less noticeable background pattern, formed from a simple 2x2 repeating pattern that gave a 50 percent gray. The introduction of color monitors for personal computers led to non-patterned, single-color backgrounds and then to arbitrary 'wallpapers'. There was a way to get a desktop picture on versions of the Mac OS before Mac OS 7.

Computer wallpaper

Wallpaper (also desktop picture and desktop background) is an image used as a background on a computer screen, usually for the desktop of a graphical user interface. "Wallpaper" is the term used in Microsoft Windows before Windows 7 (where it is called the Desktop "Background"), while Mac OS X calls it a "desktop picture" (previously, the term desktop pattern was used to refer to a small pattern that was repeated to fill the screen).

Mobile wallpaper

Download :http://rapidshare.com/files/370624726/mobile.jpg

A mobile wallpaper is a computer wallpaper sized to fit a mobile device such as a mobile phone, personal digital assistant or digital audio player. Screens range in size from 128x128 to 640x360 (for the Nokia 5800 XpressMusic) and the height is often greater than or equal to the width. Wallpapers can be expensive if purchased from the phone service provider, with Virgin Mobile Canada charging CAD $2.50[1] per wallpaper, but wallpapers can be downloaded from a computer through a data cable (using software such as BitPim if necessary) at no cost.

Wallpaper Magazine

Wallpaper (trademarked Wallpaper* with an asterisk) is a Time Inc. magazine focusing on travel, design, entertainment, fashion, and media.

The magazine was launched in 1996 by Canadian journalist Tyler Brûlé and Austrian journalist Alexander Geringer, CEO of aheadmedia, in London, UK. Brûlé sold the magazine to Time Warner in 1997. He stayed on as editorial director until 2002. 2007 saw the appointment of a new editor-in-chief, Tony Chambers, a self-styled "visual journalist". Apart from publishing the monthly magazine, Wallpaper also publishes travel guide books. There are 60 different cities currently available, and 20 more will be published by spring 2009.[citation needed]

 

Other notable names who have worked at Wallpaper include Jeremy Langmead,[1] Marcus Von Ackermann, Suzy Hoodless, and Alasdhair Willis

Wallpaper Group

                                                     Group 04

A wallpaper group (or plane symmetry group or plane crystallographic group) is a mathematical classification of a two-dimensional repetitive pattern, based on the symmetries in the pattern. Such patterns occur frequently in architecture and decorative art. There are 17 possible distinct groups.

                                                                                               

Wallpaper groups are two-dimensional symmetry groups, intermediate in complexity between the simpler frieze groups and the three-dimensional crystallographic groups (also called space groups).

 

Stealth wallpaper

Stealth wallpaper has been developed by UK defense contractor BAE Systems to prevent electronic eavesdropping on Wi-Fi and Local area network (LAN) systems, although this product is not yet commercially available.

 

It controls the transmission of Radio frequency (RF) signals and provides a safer Wireless LAN (WLAN) as an active frequency selective surface (AFSS).                                                                                       

 

The panels are 50 to 100 micrometres thick and are made in the same way as printed circuit boards - layers of copper on Kapton polymer