We all know you create E&M waves by spinning a dipole. Wether it's an AC current in an antena to produce radio waves, or an electrion falling to n=1 to produce an x-ray, moving charges create EMR. That being said, theoretically, one could charge a macroscopic object, oscillate it extremely rapidly, and produce EMR. Has anyone done this experimentally? It's a rather silly experiment, but what would be the low frequency/long wavelength detection limit for radiation?