Originally published in 1960, and written by the renowned German-American physicist Alfred Lande (1888-1976), this book challenges the view that the principles of wave-particle duality, complementarity and uncertainty are fundamental to micro-mechanics. Instead, the text sets out to reduce dualistic quantum phenomena to still more elementary general principles, such as symmetry, invariance and continuity. It thus develops the Bohr-Heisenberg account, resting on Born's statistical interpretation, into a unitary theory. Appendices are included. This book will be of value to anyone with an interest in quantum physics and the history of science.

Originally published in 1965, the aim of this book was to challenge the dualistic view of physics, that is, the assumption that beams of electrons consist of discrete particles and of waves. Lande argues that this dualistic view is unnecessary, not only on methodological grounds but also from the standpoint of physics. Lande sets out to point out that there are faults in the purely physical arguments, which have led to the dualistic doctrine and shows that by making use of the quantum rule for the exchange of linear momentum, established by W. Duane in 1923, wave-like phenomena can be fully explained on a unitary particle theory of matter. Chapters cover a variety of subjects and range from 'Dualism versus quantum mechanics' to the 'Origin of the quantum rules'. Appendices are included for reference. This book will be of value to students and scholars of the history of physics.

Originally published in 1937, this book by renowned physicist Alfred Lande aims 'to develop the principles of quantum mechanics on the basis of a few standard observations'. Lande notes that, in contrast with classical mechanics, quantum mechanics is still a relatively young science with some way to go before it is internally consistent. This book will be of value to anyone with an interest in the history of physics and quantum mechanics.