Quantum mechanics was born at the turn of the twentieth century when physicists realized that the behavior of the particles of matter--the atoms composing Max Planck's classic black body, for example--did not obey Isaac Newton's classical laws. Field...

Introduction to... Mathematical formulation...

Quantum theory is unsettling. Nobel laureate Richard Feynman admitted that it "appears peculiar and mysterious to everyone--both to the novice and to the experienced physicist." Niels Bohr, one of its founders, told a young colleague, "If it does not boggle your mind, you...

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