Wave Vector


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wave vector

[′wāv ‚vek·tər]
(physics)
A vector whose direction is the direction of phase propagation of a wave at each point in space, and whose magnitude is sometimes set at 2π/λ and sometimes at 1/λ, where λ is the wavelength.

Wave Vector

 

the vector k, whose direction coincides with the direction of propagation of a traveling wave; it is numerically equal to the wave number.

References in periodicals archive ?
in the case of magnetic strength parallel to the wave vector and the force generated by the fast modes.
Caption: Figure 2: (a) Scheme of the GISAXS setup, with [[alpha].sub.i], the incidence angle; [[alpha].sub.f], the outplane emergence angle; 2[[theta].sub.f], the inplane emergence angle; [k.sub.i] and [k.sub.f], the incident and scattering wave vector; [mu], the rotation angle of the sample; and [q.sub.x], [q.sub.y], and [q.sub.z], the coordinates of the scattering vector.
Thus the ordinary wave has both the real normal component of the wave vector (7) and the real normal component of the Poynting vector (9).
A consequence of the missing integration over the wave vector is that equal-time fields become noncommutative.
The problem for any scenario can be formed using proper arrangement of these partial wave vectors. For the three-layer system seen in Figure 1, the global matrix shown in (5) can be formed as shown below.
[E.sub.o] is the amplitude of the electric field, [omega] is the frequency of the k is the angular frequency and the wave vector is the wave vector, r is a spatial orientation vector (Wen, Y., Gao, R., & Zhao, H., 2016).
When a flat wave enters the medium along the z-axis so that at t = 0 the initial wave vector is everywhere equal to k(0) = [k.sub.0] [e.sub.z], the entire wavefront corresponds to a 2-dimensional surface in the 6-dimensional phase space, given by the conditions
Table-3: Results of Debye wave vector, Debye velocity, Debye temperature, sizes of a- and AY-cages and Fermi wave vector of unexchanged and cation exchanged Type-A zeolite.
q stands for lattice wave vector and it is in the first Brillouin zone.
The wave vector diagram for the Bragg condition is shown in Figure 3.
A real wave vector indicates a propagating wave, while an imaginary wave vector indicates attenuation (an evanescent wave).