The first comprehensive philosophical and historical account of the experimental foundations of Niels Bohr’s practice of physics.

Niels Bohr was a central figure in quantum physics, well known for his work on atomic structure and his contributions to the Copenhagen interpretation of quantum mechanics. In this book, philosopher of science Slobodan Perović explores the way Bohr practiced and understood physics, and analyzes its implications for our understanding of modern science. Perović develops a novel approach to Bohr’s understanding of physics and his method of inquiry, presenting an exploratory symbiosis of historical and philosophical analysis that uncovers the key aspects of Bohr’s philosophical vision of physics within a given historical context.

To better understand the methods that produced Bohr’s breakthrough results in quantum phenomena, Perović clarifies the nature of Bohr’s engagement with the experimental side of physics and lays out the basic distinctions and concepts that characterize his approach. Rich and insightful, Perović’s take on the early history of quantum mechanics and its methodological ramifications sheds vital new light on one of the key figures of modern physics.

This book describes new, highly effective, rigorous analysis methods for electromagnetic wave problems. Examples of their application to the mathematical modelling of micros trip lines, corrugated flexible waveguides, horn antennas, complex-shaped cavity resonators and periodic structures are considered.

In 1953, reflecting on early ventures in quantum theory, J. Robert Oppenheimer spoke of terror and exaltation, of history happening in a realm so remote from common experience that it was “unlikely to be known to any poet or historian.” Yet now, anyone can Google “quantum theory” and find more than 34 million entries—from poets and historians, certainly, as well as film critics and Buddhist monks. How—and how pervasively—quantum mechanics has entered the general culture is the subject of this book, an engaging, eclectic, and thought-provoking look at the curious, boundlessly fertile intersection of scientific thought and everyday life.

Including recollections of encounters with the theory and the people responsible for it, Jeremy Bernstein’s account ranges from the cross-pollination of quantum mechanics with Marxist ideology and Christian and Buddhist mysticism to its influence on theater, film, and fiction. Along the way, Bernstein focuses on those—such as Niels Bohr, the Dalai Lama, W. H. Auden, and Tom Stoppard—who have made quantum physics; who have argued over it, pondered it, or taken literary inspiration from it, and who have misunderstood, misconstrued, or misapplied it. One person in particular supplies a narrative thread: John Bell, a notable yet underappreciated physicist who did groundbreaking research in quantum physics. In Bell’s story, Bernstein provides a uniquely readable account of what physicists call the “measurement problem.”

Quantum Leaps is a lively, erudite book on a subject that Bernstein has lived with for most of its history. His experience and deep understanding are apparent on every page.

“The phrase ‘public intellectual’ is much bandied about. Just a few real heavyweights in the world merit the title, and Steven Weinberg is preeminent among them.”
—Richard Dawkins

“Weinberg has a knack for capturing a complex concept in a succinct, unforgettable image… One of the smartest and most diligent scientists around.”
—Nature

In this wise and wide-ranging meditation, one of the most captivating science communicators of our time challenges us to reconsider the entanglement of science and society. From the cosmological to the personal, from astronomy and quantum physics to the folly of manned spaceflight and the rewards of getting things wrong, Steven Weinberg shares his views on the workings of the universe and our aspirations and limitations. Third Thoughts aims to provoke and inform and never loses sight of the human dimension of scientific discovery.

“One of the 20th century’s greatest physicists…shares his strongly-held opinions on everything from the Higgs boson to the state of theoretical physics and the problems of science and society.”
—Forbes

“This book should be read not only for its insightful and illuminating explanations of a wide range of physical phenomena but also for the opportunity it affords to follow the wanderings of a brilliant mind through topics ranging from high-energy physics and the makeup of the cosmos to poetry, and from the history and philosophy of science to the dangers of economic inequality… [A] captivating book.”
—Mario Livio, Science