This book summarizes the fundamental differences between classical and quantum behavior, examines the Stern-Gerlach experiment and its implications, briefly presents the basic concepts of probability theory, and then moves on to the analysis of the Einstein-Podolsky-Rosen paradox and Bell's theorem.

Next, it presents the quantum contribution and introduces the concept of probability amplitude, thereby revealing the link between probabilities and the contributions of amplitudes. The final chapters expand on some exciting new developments in quantum computing and cryptography, uncover the unexpected behavior of "quantum billiards," and tackle the challenge of describing a particle "that no longer has a position."

The book includes original questions and problems - specifically designed to stimulate the reader's thinking - their answers, as well as suggestions for further study. The strange world of quantum mechanics has two aims: for students to gain a deeper understanding of the realm of the very small, and for the broad intellectually curious audience to savor the intellectual adventure of the 20th century.

[Excerpt from the text on the back cover of the edition]