# Reflection Coefficient

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Related to Reflection Coefficient: acoustic reflection coefficient

## reflection coefficient

[ri′flek·shən ‚kō·i‚fish·ənt]
(physics)
The ratio of the amplitude of a wave reflected from a surface to the amplitude of the incident wave. Also known as coefficient of reflection.

## Reflection Coefficient

the ratio of the radiant flux reflected by a body to the radiant flux incident on it. The concept of an amplitude reflection coefficient, that is, the ratio of the amplitudes of the reflected and incident waves, is sometimes used —for example, for radio waves. In general, the reflection coefficient is the sum of a direct reflection coefficient and a diffuse reflection coefficient.

References in periodicals archive ?
[K.sub.ij] is the voltage reflection coefficient between layer i and j.
For the calibration procedure used to define the reflection coefficient, (4) is used to compute Tm; here [E.sup.p.sub.y] is the scattered electric field due to a metal plate alone at z = 0 in Figure 1 and [E.sup.s.sub.y] is the scattered electric field due to the magnetic line source and conductor-backed MUT (MUT with a conductor placed at z = 0) as in Figure 1 with a magnetic line source instead of an electric line source.
The results for the variation in magnitude, [absolute value of [GAMMA]] of reflection coefficient with the frequency of the unloaded sensor using the various mesh elements together with experimental result are shown in Figure 4.
These reflection coefficients (and hence corresponding [PSI] and A) can be extracted using generalized ellipsometry.
It is important to highlight that, for this 2D numerical study, we require a more complex analysis because features such as oblique incidence or dispersion error radically affect the values of the reflection coefficient. Hence, to objectively measure the profiles, we consider different parameters to get an idea regarding the reability of this approach.
We allow for different reflection coefficients [r.sub.1] and [r.sub.2] on the two interfaces.
The reflection coefficient phase-response characteristics were measured with the measuring-computer system [20] which employs the Fourier-holography principle within the frequency band 40-48 GHz.
Caption: Figure 3: (Color online) the reflection coefficient at normal incidence as a function of the angle [phi] (see text).
Caption: Figure 6: Measured reflection coefficient according to change in air thickness and the relation between the measurement results and fitted curve.
Caption: Figure 1: Comparison of the reflection coefficient [K.sub.r] for plane, dentated, and serrated vertical seawalls.

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