From:	Adam Getchell acgetchell@*******.edu
Subject:	Technological Teleportation/Energy Sources
Date:	Tue, 16 Mar 1999 17:15:26 -0800

>>If you are talking about 'electron tunnelling', I hate to break it to you
>>but it does not really happen -- it only appears to happen because of a
>>flawed frame of reference.
>>--
>>Rat <ratinox@******.gweep.net>
>
>Umm, actually, I was thinking of quantam tunnelling, and from what I
>understand, it does actually happen. Of course, I may be wrong.

Happens all the time. Basic principle of a tunnel diode.

One of the first things after learning the Schrodinger equation is to
calculate tunneling probability through a square well of n width.

Using the Wentzel-Kramers-Brillouin technique (WKB), one can calculate the
transmission coefficient for an electron traversing an energy barrier as:

T ~= exp (-2 {Integral from x1 to x2} eta(x) dx)

eta(x) = {(2m/H^2)[U(x) - E]}^.5

where H = h-bar or Planck's constant divided by 2 pi, U(x) is the energy
barrier function, x1 and x2 are bounds of the barrier on the x-axis, and E
is the kinetic energy of the electron.

References:

Albert Thomas Fromhold, Jr. _Quantum Mechanics for Applied Physics and
Engineering_. Dover Publications, New York, 1981.

>Dave

--Adam

acgetchell@*******.edu
"Invincibility is in oneself, vulnerability in the opponent." --Sun Tzu