In some crystals the two transverse acoustic modes have exactly the same dispersion curve.
These differences become manifest as a color when the two dispersion curves intersect for some visible wavelength.
A dispersion curve is a plot of velocity versus frequency or wavelength.
Based on the distance vs. time plot, the dispersion curve is created.
Parameters can be modified to fit the derived dispersion curve to actual data (Figure 4).
Using the corresponding dispersion curves, the C v product can then be calculated and fitted to the experimental data.
Note that is dependent of the dispersion curves.
Analyzing the dispersion curves reveals sought-after information about the surface structure and bonding.
Experimental waveforms observed in plates can be understood by interpretation with reference to the dispersion curves.
The liquid is chosen according to the substance, so that the dispersion curves coincide at one wavelength.