normal dispersion

normal dispersion

[′nȯr·məl di′spər·zhən]
(geophysics)
The dispersion of seismic waves in which the recorded wave period increases with time.
(optics)
Dispersion in which the refractive index decreases monotonically and continuously with increasing wavelength.
References in periodicals archive ?
Also, in case [gamma] < 0 we have normal dispersion and in case [gamma] > 0 anomalous dispersion.
The negative value of the parameter P creates a reversed Airy-like pulse (oscillatory tail in front of the pulse) in case of normal dispersion.
From 465 observations the measurements result of the slag compound, for annually production, it's observed that is existing one pronounced variation of value of slag components and this variation is of not determinate character with normal dispersion ore lognormal.
Unlike with normal dispersion, anomalous dispersion has the extraordinary effect of enabling a light pulse to appear again at a distant point along its direction of propagation and produce the exact shape of the light pulse that entered the chamber.
It is important to note that primary aggregates are the characteristic units of carbon black and are not broken down further under normal dispersion condition.
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The goals of the present paper are: (i) to solve HE (5) and FSE (4) under localized initial conditions for the weak normal dispersion case; (ii) to compare solutions of the HE and FSE for the linear and the nonlinear case; (iii) to compare solutions of the HE and FSE along a weak normal dispersion line (see Section 3 for details).
If [GAMMA] is positive, we have the normal dispersion case, if [GAMMA] is negative, we have the anomalous dispersion case, and if [GAMMA] is equal to zero, we have the dispersionless case.
Moving along the weak normal dispersion line [GAMMA] = 0.