Comparison wavefront

By comparison with Eq. 27, this shows that the effect of the wavefront slope is to displace the image by... 

Figure 7.11 provides a plot of T(x,f) as a function of the distance in units of the length L at a fixed time t = lOr, for the double-barrier resonant system described above (solid line). Notice that the probability density exhibits a propagating wavefront. For comparison. Figure 7.11 shows also the solution for the probability density using the Gamow s... 

The reciprocal conductivity tissue yielded isochrones which are shown in Figure 7. Since this is non-physiological there is no experimental evidence for comparison. However, Muler and Markin (1978) determined isochrone shapes for this condition based on the assumption that each isochrone element behaves as if it were part of an infinite plane wavefront. Their result is also a square-like shape but rotated 90°. As noted above there is reason to believe that the plane... 

Figure 2. Spatial action potential wavefront obtained from the discontinuous model. Note major discontinuities in leading edge (arrows). A smooth action potential is shown for comparison (insert).

Figure 7.30 illustrates an experimental circuit with electrode length x = 8 m, radius r = 1 mm, and buried depth h = 0.22 m. The soil resistivity was measured to be 140 Qm. An impulse current with the amplitude Iq = 1 A and the wavefront duration Tf = 20 ns is applied. To make an FDTD simulation easy, the same conductor as the electrode is used as a lead wire with length x. Figure 7.31 shows a comparison of the simulation results for x = 0.22 m with a measured result. It should be clear that the FDTD simulation gives a satisfactory accuracy. 

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