To install click the Add extension button. That's it.

The source code for the WIKI 2 extension is being checked by specialists of the Mozilla Foundation, Google, and Apple. You could also do it yourself at any point in time.

Kelly Slayton
Congratulations on this excellent venture… what a great idea!
Alexander Grigorievskiy
I use WIKI 2 every day and almost forgot how the original Wikipedia looks like.
Live Statistics
English Articles
Improved in 24 Hours
Added in 24 Hours
What we do. Every page goes through several hundred of perfecting techniques; in live mode. Quite the same Wikipedia. Just better.

From Wikipedia, the free encyclopedia

Noise in a CRT television
Noise in a CRT television
Noise captured from a VHS tape
Noise in a flat screen television
Noise in a flat screen television

Noise, in analog video and television, is a random dot pixel pattern of static displayed when no transmission signal is obtained by the antenna receiver of television sets and other display devices. The random pattern superimposed on the picture, visible as a random flicker of "dots" or "snow", is the result of electronic noise and radiated electromagnetic noise accidentally picked up by the antenna. This effect is most commonly seen with analog TV sets or blank VHS tapes.

There are many sources of electromagnetic noise which cause the characteristic display patterns of static. Atmospheric sources of noise are the most ubiquitous, and include electromagnetic signals prompted by cosmic microwave background radiation,[1] or more localized radio wave noise from nearby electronic devices.[2]

The display device itself is also a source of noise, due in part to thermal noise produced by the inner electronics. Most of this noise comes from the first transistor the antenna is attached to.[2]

UK viewers used to see "snow" on black after sign-off, instead of "bugs" on white, a purely technical artifact due to old 405-line British senders using positive rather than the negative video modulation used in Canada, the U.S., and (currently) the UK as well. Since one impression of the "snow" is of fast-flickering black bugs on a white background, the phenomenon is often called myrornas krig in Swedish, myrekrig in Danish, hangyák háborúja in Hungarian, and semut bertengkar in Indonesian, which all translate to "war of the ants". It is also known as ekran karıncalanması in Turkish, meaning "ants on the screen", hangyafoci in Hungarian which means "ant football", and in Romanian, purici, which translates into "fleas". In French however, this phenomenon is mostly called neige (snow). In Argentina this video noise is called lluvia (rain), maybe related to the sound that go along with it. [3]

Most modern televisions automatically change to a blue or black screen, or turn to standby after some time if static is present.

YouTube Encyclopedic

  • 1/3
    415 798
    18 907
    55 349
  • UHF microwave gun
  • Why Is Your NES A TV Station? (That's Weird)
  • TSP #170 - Is 5G Dangerous?


See also


  1. ^ "Background on the Background Explorer and the Science of John Mather". NASA.
  2. ^ a b "Antenna basics". HDTV Primer.
  3. ^ "Imagen de lluvia o puntos en tu televisor". DirectTV argentina.
This page was last edited on 26 November 2020, at 23:10
Basis of this page is in Wikipedia. Text is available under the CC BY-SA 3.0 Unported License. Non-text media are available under their specified licenses. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc. WIKI 2 is an independent company and has no affiliation with Wikimedia Foundation.