General Science

  • noun a very small error in a video signal
  • noun a very small error in a digital version of an analog signal


  • An unexpected signal, component, or result, which is unrelated to the studied phenomenon. For example, an incorrect reading of an analog indicator caused by the viewer observing at an improper angle.
  • Unintended imperfections in signals or images due to software or hardware limitations. Seen, for example, as snow or spots.