Today I have changed my "Einstellungen" (settings?):
I now write E-mails in HTML format. I do not know what
that means -- but trial E-mails sent today to my family
have been free of unwanted line breaks.
More on evanescent waves: They are found in
calculations on a two-dimensional model of the
cochlear channel with x-independent properties
and with negligible viscosity and friction.
If the basilar-membrane (BM) stiffness S is greater
than M * omega^2 [M = BM surface mass density;
omega = 2pi * frequency], then a travelling wave
(TW) results. If, however, S is less than M * omega^2,
then a standing wave occurs. It is called evanescent,
because the _expression_ for the sound pressure
contains a factor of exp(-kappa * x), where kappa can
be determined from the following equation:
kappa * H * tan(kappa * H)
= 2 rho * H *omega^2 / [M * omega^2 -S].
Here, rho = liquid density, and H = half-channel height.
Is that evanescent wave discussed in a published paper?
Dr. phil. nat.,
r. PSI and ETH Zurich,
Phone: 0041 56 441 77 72.
Mobile: 0041 79 754 30 32.
E-mail: reinifrosch@xxxxxxxxxx .