Faraday fading - определение. Что такое Faraday fading
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Что (кто) такое Faraday fading - определение

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.
Найдено результатов: 70
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.
Faraday effect         
  • Polarization rotation due to the Faraday effect
  • GaAs-Faraday rotation spectrum
  • left
PHYSICAL LAW
Faraday Effect; Faraday rotation; Rotation measure; Faraday Rotation; Faraday rotation measure; Farday effect
The Faraday effect or Faraday rotation, sometimes referred to as the magneto-optic Faraday effect (MOFE), is a physical magneto-optical phenomenon. The Faraday effect causes a polarization rotation which is proportional to the projection of the magnetic field along the direction of the light propagation.
Faraday effect         
  • Polarization rotation due to the Faraday effect
  • GaAs-Faraday rotation spectrum
  • left
PHYSICAL LAW
Faraday Effect; Faraday rotation; Rotation measure; Faraday Rotation; Faraday rotation measure; Farday effect
¦ noun Physics the rotation of the plane of polarization of electromagnetic waves in certain substances in a magnetic field.
Rayleigh fading         
  • Densely built Manhattan has been shown to approach a Rayleigh-fading environment.
  • The normalized Doppler power spectrum of Rayleigh fading with a maximum Doppler shift of 10 Hz.
  • Filtered by Butterworth filter Rayleigh time series (sampling frequency is 120 Hz)
  • One second of Rayleigh fading with a maximum Doppler shift of 100 Hz.
  • One second of Rayleigh fading with a maximum Doppler shift of 10 Hz.
STATISTICAL MODEL
Jakes fading model
Rayleigh fading is a statistical model for the effect of a propagation environment on a radio signal, such as that used by wireless devices.
Faraday cage         
  • Faraday cage demonstration on volunteers in the [[Palais de la Découverte]] in Paris
  • EMI shielding around an MRI machine room
  • Faraday bags are a type of Faraday cage made of flexible metallic fabric. They are typically used to block remote wiping or alteration of wireless devices recovered in criminal investigations, but may also be used by the general public to protect against data theft or to enhance [[digital privacy]].
  • Video of a Faraday cage shielding a man from electricity
  • Faraday shield at a power plant in Heimbach, Germany
  • Fe–Ni – high-permeability [[permalloy]] (80%Ni–20%Fe)
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ENCLOSURE OF CONDUCTIVE MESH USED TO BLOCK ELECTRIC FIELDS
Faraday shield; Faraday Cage; Electrostatic shielding; Faraday's cage; Hoffman box; Faradays cage; Farraday Cage; Farraday cage; Faraday suit; Faraday box; Faraday Screen
¦ noun Physics an earthed metal screen surrounding a piece of equipment in order to exclude electrostatic influences.
Fading Out         
2001 EXTENDED PLAY BY PRIMITIVE RADIO GODS
Fading Out EP; Fading Out (EP)
Fading Out is the Primitive Radio Gods' first and only officially released EP. It doubles as an extended single for the song of the same name from the White Hot Peach album.
Faraday cup         
  • Fig, 2. Faraday cup I-V characteristic
  • Fig. 1. Faraday cup for [[plasma diagnostics]] 1 – cup-receiver, metal (stainless steel). 2 – electron-suppressor lid, metal (stainless steel). 3 – grounded shield, metal (stainless steel). 4 – insulator (teflon, ceramic).
METAL (CONDUCTIVE) CUP DESIGNED TO CATCH CHARGED PARTICLES IN VACUUM
Faraday plate; Faraday cup in plasma diagnostics; Faraday Cup in Plasma Diagnostics
A Faraday cup is a metal (conductive) cup designed to catch charged particles in vacuum. The resulting current can be measured and used to determine the number of ions or electrons hitting the cup.
Faraday Discussions         
CHEMISTRY JOURNAL
Symposia of the Faraday Society; Special Discussions of the Faraday Society; Faraday Discussions of the Chemical Society; Discussions of the Faraday Society; Faraday Special Discussions of the Chemical Society; Faraday Symposia of the Chemical Society; Faraday Discuss; Faraday Discuss.; Discuss. Faraday Soc.; Discuss Faraday Soc; Faraday discussions
Faraday Discussions is a scientific journal publishing original research papers presented at a long-running series of conferences on physical chemistry, chemical physics and biophysical chemistry which are also called Faraday Discussions, together with a record of the comments made at the meeting. The journal was originally published by the Faraday Society.

Википедия

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.