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Retarded time information


In electromagnetism, electromagnetic waves in vacuum travel at the speed of light c, according to Maxwell's Equations. The retarded time is the time when the field began to propagate from the point where it was emitted to an observer. The term "retarded" is used in this context (and the literature) in the sense of propagation delays.

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Retarded time

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Equations. The retarded time is the time when the field began to propagate from the point where it was emitted to an observer. The term "retarded" is used in...

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Retardation

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retardation or retarded in Wiktionary, the free dictionary. Retardation is the act or result of delaying; the extent to which anything is retarded or delayed;...

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Retarded potential

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In electrodynamics, the retarded potentials are the electromagnetic potentials for the electromagnetic field generated by time-varying electric current...

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Quasistatic approximation

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retarded potential and Jefimenko's equations. In this point of view the quasistatic approximation is obtained by using time instead of retarded time or...

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Electric field

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are given in terms of retarded time which indicate that electromagnetic disturbances travel at the speed of light. Advanced time, which also provides a...

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Magnetic field

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principle of locality in physics and are expressed in terms of retarded time or the time at which the cause of a measured field originated given that the...

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Retarded position

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direction of the mass at the time it was accelerated (the retarded time and position). The retarded time and the retarded position of the mass are a direct...

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Magnetic vector potential

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the integration variable, within volume Ω). The earlier time t′ is called the retarded time, and calculated as t ′ = t − | r − r ′ | c . {\displaystyle...

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Magnetic current

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functions of time are sinusoids of the same frequency, the time domain equation can be replaced with a frequency domain equation. Retarded time is replaced...

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Larmor formula

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=(1-\beta ^{2})^{-1/2}} . The terms on the right are evaluated at the retarded time t r = t − R / c {\displaystyle t_{\text{r}}=t-R/c} . The right-hand...

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Classical electromagnetism

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non-zero amount of time to be "felt" elsewhere (required by special relativity). For the fields of general charge distributions, the retarded potentials can...

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Binary black hole

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{dM_{B}}{dU}}=-f(U)} , with f(U) being the gravitational wave flux at retarded time U. f is a surface integral of the news function at null infinity varied...

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Inductance

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equality step, we used the retarded potential expression for A j {\displaystyle A_{j}} and we ignore the effect of the retarded time (assuming the geometry...

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Intellectual disability

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as the euphemism treadmill. The terms mental retardation and mentally retarded became popular in the middle of the 20th century to replace the previous...

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Unguided bomb

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air burst at a specific distance from the ground or other target. The retarded bomb uses a mechanical method of creating increased aerodynamic drag, such...

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Closed and exact differential forms

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fourth variable also the time t, whereas on the right-hand side, in j i ′ {\displaystyle j_{i}'} , the so-called "retarded time", t ′ := t − | r → − r →...

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Nonlinear acoustics

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forward propagating waves and the use of a coordinate transformation to a retarded time frame: ∂ p ∂ z − β ρ 0 c 0 3 p ∂ p ∂ τ = δ 2 c 0 3 ∂ 2 p ∂ τ 2 {\displaystyle...

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Computational aeroacoustics

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medium). The integral is taken over all sources at the retarded time (source time), which is the time at that the source is sent out the signal, which arrives...

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Love Songs for the Retarded

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Love Songs for the Retarded is the second studio album by the American punk rock band the Queers, released in 1993 by Lookout! Records. It was the first...

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Antenna measurement

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electrostatic field with retarded time. The second term is as though nature were trying to allow for the fact that the effect is retarded (Feynman). The third...

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Hertz vector

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\left[\mathbf {M} \left(\mathbf {r} '\right)\right]} should be evaluated at the retarded time | r − r ′ | / v {\displaystyle |\mathbf {r} -\mathbf {r'} |/v} . The...

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