EMP is a burst of noise. You could make it with an explosion, or via the undisciplined discharge of a large capacitor into a semi-resonant circuit. It pumps ene

EMP is a burst of noise. You could make it with an explosion, or via the undisciplined discharge of a large capacitor into a semi-resonant circuit. It pumps energy into a broad spectrum. It's hard to contain it in a very specific direction, although simple reflection techniques, etc, could be used. High-powered microwaves are like a microwave oven, or a radar, except more powerful I guess. Could be focused in a specific direction with ease. It usually works at one main frequency, or a small set of well-defined frequencies.