100 years of quantum mysteries: as quantum theory celebrates its 100th birthday, spectacular successes are mixed with persistent puzzles

Article Abstract:

The history of developments in quantum theory in the twentieth century are detailed. The tension present between the seemingly surreal implications of the theory, and the tangible results of the practical application of it, is examined. Highlights in the development of quantum theory, such as groundbreaking theories by Max Planck and Niels Bohr, and the Schrodinger equation, are chronicled.

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Cavity quantum electrodynamics

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The behavior of photons and atoms in small cavities, which differs from free-space behavior, demonstrates the principles of quantum physics. Experiments with QED may facilitate the development of sensors in the microwave and optical fields.

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Heisenberg, uncertainty and the quantum revolution

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German scientist Werner Heisenberg is best known for his uncertainty principle, which addresses the limits of scientific understanding. Heisenberg won the Nobel Prize for physics in 1933. His other achievements are described.

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