Faraday fading - ορισμός. Τι είναι το Faraday fading
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Τι (ποιος) είναι Faraday fading - ορισμός

VARIATION OF THE ATTENUATION OF A SIGNAL WITH VARIOUS VARIABLES
Selective fading; Fade (radio); Signal fade; Flat fading; Upfade; Fading channel; Fast fading; Slow fading; Frequency-selective fading; Frequency selective fading; Shadow fading; Dispersive fading; Amplitude fading; Doppler Spread; Doppler spread
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  • Frequency-selective time-varying fading causes a cloudy pattern to appear on a [[spectrogram]]. Time is shown on the horizontal axis, frequency on the vertical axis and signal strength as grey-scale intensity.

Fading         
·noun Loss of color, freshness, or vigor.
II. Fading ·noun An Irish dance; also, the burden of a song.
III. Fading ·adj Losing freshness, color, brightness, or vigor.
IV. Fading ·p.pr. & ·vb.n. of Fade.
Fading         
In wireless communications, fading is variation of the attenuation of a signal with various variables. These variables include time, geographical position, and radio frequency.
faraday         
  • Punch]]'' (21 July 1855)
  • Christmas Lecture]] at the [[Royal Institution]] in 1856
  • Faraday's grave at [[Highgate Cemetery]], London
  • John Daniell]] (left), founders of electrochemistry
  • ideomotor effect]] on table-turning
  • Built in 1831, the [[Faraday disc]] was the first [[electric generator]]. The horseshoe-shaped magnet ''(A)'' created a magnetic field through the disc ''(D)''. When the disc was turned, this induced an electric current radially outward from the centre toward the rim.  The current flowed out through the sliding spring contact ''m'', through the external circuit, and back into the centre of the disc through the axle.
  • A diagram of Faraday's iron ring-coil apparatus
  •  isbn = 978-0-486-43505-3 }} See plate 4.</ref>
  • location=National Portrait Gallery, UK}}</ref>
  • One of Faraday's 1831 experiments demonstrating induction. The liquid battery ''(right)'' sends an electric current through the small coil ''(A)''.  When it is moved in or out of the large coil ''(B)'', its magnetic field induces a momentary voltage in the coil, which is detected by the galvanometer ''(G)''.
  • Lighthouse lantern room from mid-1800s
  • Plaque erected in 1876 by the [[Royal Society of Arts]] in Marylebone, London
  • Portrait of Faraday in 1842 by [[Thomas Phillips]]
  • ''Chemische Manipulation'', 1828
  • Equipment used by Faraday to make glass on display at the [[Royal Institution]] in London
  • Statue of Faraday in [[Savoy Place]], London. Sculptor [[John Henry Foley]].
  • Three Fellows of the [[Royal Society]] offering the presidency to Faraday, 1857
ENGLISH SCIENTIST
M. Faraday; Faraday death; Michael farraday; Michael Farraday; Micheal Faraday; Michael Farady; Faradayan; Faraday; Faraday, Michael; Michael faraday; Michal Faraday; Michael Faraday death; Death of Michael Faraday; Sarah Barnard
['far?de?]
(abbrev.: F)
¦ noun Chemistry a unit of electric charge equal to Faraday's constant.
Origin
early 20th cent.: from the name of the 19th-cent. English physicist Michael Faraday.

Βικιπαίδεια

Fading

In wireless communications, fading is variation of the attenuation of a signal with various variables. These variables include time, geographical position, and radio frequency. Fading is often modeled as a random process. A fading channel is a communication channel that experiences fading. In wireless systems, fading may either be due to multipath propagation, referred to as multipath-induced fading, weather (particularly rain), or shadowing from obstacles affecting the wave propagation, sometimes referred to as shadow fading.