the file lvdevice.dll once and place it in the same folder as the *.exe files.
You can download the unzipping application from here.
Note: You DO NOT need the lvdevice.dll file for (1).
1) NEW!!! This file simulates the actions of lenses.
You DO need the lvdevice.dll file for the rest (2-6).
2) This file is a demonstration of interference and diffraction.
3) This file simulates resonance in time and frequency domains.
4) This file shows the action of two waves interfering.
5) This file is small program that demonstrates Snell's law.
6) This file is a virtual experiment of waves on a string under tension.