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'''Telluric contamination''' is [[systematic error|contamination]] of the [[Astronomical spectroscopy|astronomical spectra]] by the [[Earth's atm ==Interference with astronomical observations== ...

...The graph shows that as frequency drops atmospheric noise dominates other sources, and that as frequency rises, although all noise quiets, human-caused noise ...in the receiver input circuits, mostly caused by the random thermal motion of molecules inside [[resistor]]s. ...

...onstructive interference. The dark areas produce dark lines of destructive interference. ]] ...f a pattern of “fringes” when the phase relationship between the component sources change. ...

{{Short description|Disruption to reception of television signals}} ...ccurring and artificial spark discharges, and effects due to the operation of radio transmitters. ...

[[File:Cable end.JPG|thumb|A ferrite bead at the end of a [[Mini USB]] cable]] ...pace]] |access-date=2015-04-21 |date=April 1, 2000}}</ref>{{snd}}is a type of [[choke (electronics)|choke]] that suppresses high-frequency [[electronic n ...

...cription|Distance over which a propagating wave maintains a certain degree of coherence}} ...ave propagation)|Wave interference]] is strong when the paths taken by all of the interfering waves differ by less than the coherence length. A wave with ...

{{Short description|Product of geometric length and refractive index}} ...overn [[Interference (wave propagation)|interference]] and [[diffraction]] of light as it propagates. ...

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{{short description|Level of background noise in a signal}} ...trum analyzer, display, noise floor.jpg|thumb|alt=Image showing the screen of a spectrum analyzer to illustrate a measurement noise floor.|Measurement fr ...

...cases where the station's current analog tower could not handle the stress of the new digital antenna's weight and [[wind load]], station owners had to c ...of their current analog [[broadcast range|coverage area]], or run the risk of losing [[service contour|protection]] from encroachment by other stations. ...

{{Short description|Spreading the frequency domain of a signal}} ...nications, increasing resistance to natural [[Interference (communication)|interference]], [[Noise (electronics)|noise]], and [[radio jamming|jamming]], to prevent ...

{{BLP sources|date=March 2009}} ...table for being mainly constructed from the [[Electromagnetic interference|interference]] caused on improperly shielded audio equipment when a [[GSM]] mobile telep ...

...MC testing (radiated emissions and immunity). The furniture has to be made of wood or plastic, not metal.]] ...romagnetic environment. It is also the name given to the associated branch of [[electrical engineering]]. ...

...netic compatibility|and|electromagnetic interference|acoustic noise due to electromagnetic fields|electromagnetically induced acoustic noise and vibration||Noise (dis [[File:Pink.noise.png|thumb|Random fluctuations of voltage in [[pink noise]]]] ...

{{Independent sources|date=March 2025}} ...cooperative agreement by [[Associated Universities, Inc]]. for the purpose of [[radio astronomy]]. NRAO designs, builds, and operates its own high-sensit ...

...use of site survey tools. Interviews with IT management and the end users of the wireless network are also important to determine the design parameters As part of the wireless site survey, the effective range boundary is set, which define ...

...[[dielectric]] medium at a speed greater than the [[phase velocity]] of [[electromagnetic wave]]s in that medium. ...particles seemed to be severely limited due to the inherent low intensity of the radiation. ...

{{Short description|Response of a system to a change from an equilibrium state}} ...sarily tied to abrupt events but to any event that affects the equilibrium of the system. The [[impulse response]] and [[step response]] are transient re ...

{{Short description|Electromagnetic wave that is not pulsed}} ...ly a [[sine wave]], that for [[mathematical analysis]] is considered to be of infinite duration.<ref>{{cite web |url=https://encyclopedia2.thefreediction ...

...[University of Edinburgh]]<br>[[University of Manchester]]<br>[[University of Rochester]] ...f [[direct scattering]] and [[inverse scattering]]. He was also the author of numerous other contributions to optics. ...