May be it's slightly out of the field, but I recently saw a very illustrative clip demonstrating redistribution of microwaves energy by neon lamps array inserted in microwave oven with different loads. :)

3D distribution of the field is impressively visualised by individual lamp radiation while array is going through the standing wave during platform rotation.

Thanks, and do you know some references? Is this experimental data or yet another computer can?

I'll try to remember one

for a moment I found only this (commented on english) with led's array

http://prikol.bigmir.net/view/170911/

original version jn YouTube i didn't found/

There's a book by Harter, "Symmetry and dynamics". Now, this is largely a theoretical title, but I remember quite a few fotographs of actual experiments displayed in the book. Those which might be closest to what you are looking for concern coupled pendula (pendulums !?!).

http://www.amazon.de/Principles-Symmetry-Dynamics-Spectroscopy-v/dp/0471050202