Simulation Doppler Effect
Vollversion 1.0 - © 2002 Steffen Maus und Daniel Roth - All rights reserved!!
While emitting circular waves (phase velocity c) a source is moving with a constant velocity v. Depending on the position of an observer a frequency change (the so called "Doppler Effect") can be observed.
By moving the mouse, the mouse position, the elapsed time t and the the wave period T can be displayed.
Parameter changes have to be confirmed by hitting the ENTER key.
- The background of the animation and the appearence of the emitter can be changed by editing the ".gif" bitmap files in the directory.
The following methods are available:
make user interface elements visible or invisible:
state = "yes": make user interface element visible
state = "no": make user interface element invisible
element = "VBox": text field for velocity input
element = "tOutput": overlay display of coordinates, time and frequency
element = "Start": button to start/stop the simulation
set wave phase velocity (default value = 10)
set emitter velocity relative to wave phase velocity (default value = 0.4)
set wave period (default value = 1.5s)
set time step for numerical caluclation (default value = 0.1s)