## This is an applet which demonstrates the behavior of
one-dimensional scattering solutions of the Schroedinger
equation.

The upper panel shows the potential. Drag any segment of
the heavy blue line to change the potential. The arrows to
left and right indicate the energy of the scattering state. Drag
these up or down to change the energy. To observe the time evolution
of the state, press the "Animate" button. The bottom panel shows the
wavefunction, with the real part drawn in blue, and the imaginary
part drawn in the red dashed line. The electron mass used corresponds
to that of electrons in GaAs.

Note for students: There are no calls to the cos, sin, or exp
functions in this applet, only simple arithmetic and sqrt are used.

Applet developed by Richard Castro, based upon C code by W. R. Frensley.