Quantum Mechanics, the seventh Physical Science <l:6,66>Advance<e>, distorts the orderly, clock-like Newton's universe by introducing theories of general relativity and Quantum Physics. Quantum Mechanics also upsets notions of determinacy, proving that nothing can ever be known for sure. It offers the superpowerful <l:1,61>A-Bomb<e>, one of the most devastating weapons ever developed, which can be planted by certain special units or simply dropped from a plane.