Wave addition

Folks,

Please play around with the following applets. Write down some comments - anything you find interesting, anything you learn, etc. Play around with the applets. Make comments.

Two things to keep in mind - one is very important. WHAT IS SUPERPOSITION (AKA Wave addition)? Another (less important) thing to consider: What are beats?


1. Observe what happens when two (positive amplitude) wave pulses interact.

http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=18

2. Then look at this one:

http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=19.0

3. Now this one:

http://webphysics.davidson.edu/applets/superposition/GroupVelocity.html

4. Here are some more details to examine:

http://www.kettering.edu/physics/drussell/Demos/superposition/superposition.html

http://zonalandeducation.com/mstm/physics/waves/interference/waveInterference2/WaveInterference2.html

5. More complex, but cool:

http://www.colorado.edu/physics/2000/applets/fourier.html

6. Also:

http://www.walter-fendt.de/ph14e/stwaverefl.htm

7. If you have time, check this out:

http://falstad.com/mathphysics.html

Click on the first link (Ripple Tank 2-d wave applet). Play around.

Enjoy!