<p>Quantum theory confronts us with bizarre paradoxes which contradict the logic of classical physics.<br><br>At the subatomic level, one particle seems to know what the others are doing, and according to Heisenberg's "uncertainty principle", there is a limit on how accurately nature can be observed. And yet the theory is amazingly accurate and widely applied, explaining all of chemistry and most of physics.<br>Introducing Quantum Theory tak...