All these microwaves just need a more complex 'plate spinner' that actually translates the rotating plate across field lines. Kind of like a spirograph... http://i1216.photobucket.com/albums/dd371/benice_chen/hypo_h...

edit: nevermind, didn't realize they kept the 'plate spinners' on during the experiment. The rings in the appalam are artifacts from rotating an anti-node through the food. would have to do something different to get equal heating using ~two points vs. a line