Download the Atoms in Motion App here (Mac OSX Only. Updated Nov 11, 2014).
The download is a zip file that includes the app and all simulation files.
If you get a security warning when trying to run Atoms in Motion, right click (command-click/two-finger click) the App and choose Open.
The individual simulation files can be downloaded here:
(right-click or command-click and choose "save as")
SHM Wave Machine
Simple Waves Overview
Simple Waves - Transverse 1
Simple Waves - Transverse 2
Simple Waves - Longitudinal
Superposition 1
Superposition 2
Standing Wave Reflections
NOTE: All of these simulations require Java (except for SHM Wave Machine which requires Flash), but you may need ot lower your Java security settings in your Java Control Panel and/or adjust browser security settings before they will run.