Go to page 1, RedaRRow has a great post on the LRAD. (directed acoustics)
I've also heard of a space based weapon system that relies on kinetic energy; lauching large spikes at a target from space, the kinetic energy alone will obliterate a large building and could penetrate well beneath the Earth's surface.
-High Energy Laser
I've also heard of a space based weapon system that relies on kinetic energy; lauching large spikes at a target from space, the kinetic energy alone will obliterate a large building and could penetrate well beneath the Earth's surface.
-High Energy Laser