secondary wave


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Related to secondary wave: primary wave

secondary wave

[′sek·ən‚der·ē ′wāv]
(geophysics)
(optics)
One of the waves that radiate from each point on a wavefront, according to Huygens' principle.
References in periodicals archive ?
Finally, of those cases (n=7) yielding a normal secondary wave of aggregation to ADP and/or epinephrine using unadjusted LTA, all either responded with a secondary wave only at a higher concentration of agonist or else failed to generate a secondary wave in response to the agonist even when used at a higher agonist concentration (two examples for each agonist are shown in Figure 4).
There are also likely to be special cases where the secondary wave may turn out to be easier to detect than the primary burst of waves, but I think they will be rare.
On the contrary, they make it more dangerous because when the sea is rough secondary waves are created.
Since an earthquake creates two waves, the benign primary wave can be detected and converted into public warning by censors before the arrival of the damaging secondary waves, carrying the earthquakes' destructive force.
They arise indeed in form of parametric subharmonic instability which generates secondary waves having smaller scale than the width of the wave beams of the attractor.
The system detected primary seismic waves 10 seconds before the stronger secondary waves came.
These systems work by detecting the primary seismic waves, or P waves, that arrive before the more damaging secondary waves.
There are two types of waves: primary waves, or P waves, and secondary waves, or S waves.
FORTY MINUTES after impact: Secondary waves flow across the Irish Sea, North Sea and the Channel, raising sea levels and flooding all British coastal cities.
After the P waves come the S or secondary waves, which shake the ground up and down.
This stimulates the neighbouring rods to oscillate and emit secondary waves.