The New Background of Science by Sir James Jeans is an insightful exploration of the profound changes in twentieth-century physics and their philosophical implications. Sir James Jeans delves into the transformative concepts of relativity and quantum theory, highlighting how these have reshaped our understanding of the physical world. He provides a clear and accessible account of complex scientific principles, such as space and time, the nature of matter and radiation, wave mechanics, and the principle of indeterminacy. The book contrasts twentieth-century physics with the deterministic and materialistic views that dominated the nineteenth century, offering a more nuanced perspective that aligns better with everyday human experience. Through a blend of science and rudimentary philosophy, Jeans invites readers to appreciate the broader significance of scientific discoveries, making the content valuable for both students of physics and general readers interested in modern science.
The New Background of Science by Sir James Jeans is an insightful exploration of the profound changes in twentieth-century physics and their philosophical implications. Sir James Jeans delves into the transformative concepts of relativity and quantum theory, highlighting how these have reshaped our understanding of the physical world. He provides a clear and accessible account of complex scientific principles, such as space and time, the nature of matter and radiation, wave mechanics, and the principle of indeterminacy. The book contrasts twentieth-century physics with the deterministic and materialistic views that dominated the nineteenth century, offering a more nuanced perspective that aligns better with everyday human experience. Through a blend of science and rudimentary philosophy, Jeans invites readers to appreciate the broader significance of scientific discoveries, making the content valuable for both students of physics and general readers interested in modern science.
The field of modern physics represents one of the most profound intellectual revolutions in the history of science. From the groundbreaking insights of relativity to the fascinating and often counterintuitive principles of quantum mechanics, modern physics has reshaped our understanding of space, time, matter, and energy. The book Modern Physics: From Relativity to Quantum Mechanics is a collective effort to present these transformative ideas in a clear, structured, and accessible manner for students, educators, and researchers. This multi-author volume brings together the expertise and academic experience of distinguished scholars who have dedicated their careers to teaching and advancing the field of physics. Each contributor offers a unique perspective, ensuring that the topics are explored with both depth and clarity. The collaborative nature of this work allows for a comprehensive treatment of concepts ranging from the foundations of special and general relativity to the principles governing atomic and subatomic systems. The primary aim of this book is to bridge the gap between classical physics and contemporary scientific developments. It is designed to serve as a foundational text for undergraduate and postgraduate students, while also acting as a reference for researchers and educators. Care has been taken to present theoretical concepts alongside practical applications, enabling readers to appreciate both the elegance and utility of modern physics. The chapters are organized in a logical progression, beginning with the limitations of classical physics and the emergence of relativity, followed by an in-depth exploration of quantum theory, atomic structure, and advanced topics in modern physics. Mathematical rigor is balanced with conceptual explanations, making the content both challenging and approachable. We would like to express our sincere gratitude to all contributors for their dedication and scholarly input. Their combined efforts have made this book a rich and valuable resource. We also extend our appreciation to academic institutions, colleagues, and students whose feedback and encouragement have played a crucial role in shaping this work. It is our hope that this book will inspire curiosity, foster critical thinking, and serve as a stepping stone for further exploration in the fascinating world of modern physics. As the field continues to evolve, we trust that readers will find in these pages both a solid foundation and a source of inspiration for future discoveries.
Quantum physicist, New York Times bestselling author, and BBC host Jim Al-Khalili offers a fascinating and illuminating look at what physics reveals about the world Shining a light on the most profound insights revealed by modern physics, Jim Al-Khalili invites us all to understand what this crucially important science tells us about the universe and the nature of reality itself. Al-Khalili begins by introducing the fundamental concepts of space, time, energy, and matter, and then describes the three pillars of modern physics—quantum theory, relativity, and thermodynamics—showing how all three must come together if we are ever to have a full understanding of reality. Using wonderful examples and thought-provoking analogies, Al-Khalili illuminates the physics of the extreme cosmic and quantum scales, the speculative frontiers of the field, and the physics that underpins our everyday experiences and technologies, bringing the reader up to speed with the biggest ideas in physics in just a few sittings. Physics is revealed as an intrepid human quest for ever more foundational principles that accurately explain the natural world we see around us, an undertaking guided by core values such as honesty and doubt. The knowledge discovered by physics both empowers and humbles us, and still, physics continues to delve valiantly into the unknown. Making even the most enigmatic scientific ideas accessible and captivating, this deeply insightful book illuminates why physics matters to everyone and calls one and all to share in the profound adventure of seeking truth in the world around us.
Twentieth-Century Physics A century which has run less than a third of its course has already witnessed two great upheavals in physical science. These are associated with the words Relativity and Quanta, and have forced the physicist of to-day to view nature against a background of ideas which is very different from that of his nineteenth-century predecessor. The latter thought of nature as an assemblage of objects located in space and continually changing with the passage of time. It was something entirely detached from, and external to, himself; something which he could study and explore from a distance as the astronomer studies the surface of the sun through his telescope, or the explorer the desert from his aeroplane. He thought of the apparatus of his laboratory as the astronomer thinks of his telescope, or the explorer of his field-glass; it shewed him things which were there whether he looked at them or not, which had been there before the first man appeared on earth, and would still be there after the last man had been frozen to extinction. Finally he accepted a “common-sense” view of nature, believing that there was no great difference between appearance and reality; the possibility that things were not as they seemed might provide an admirable subject for a debating society of philosophers, but was of as little practical concern to the scientist as to the farm-labourer. Although he may not have realised it, this complex of beliefs constituted a philosophical creed in itself.
Written for advanced undergraduates, physicists, and historians and philosophers of physics, this book tells the story of the development of our understanding of quantum phenomena through the extraordinary years of the first three decades of the twentieth century. Rather than following the standard axiomatic approach, this book adopts a historical perspective, explaining clearly and authoritatively how pioneers such as Heisenberg, Schrodinger, Pauli and Dirac developed the fundamentals of quantum mechanics and merged them into a coherent theory, and why the mathematical infrastructure of quantum mechanics has to be as complex as it is. The author creates a compelling narrative, providing a remarkable example of how physics and mathematics work in practice. The book encourages an enhanced appreciation of the interaction between mathematics, theory and experiment, helping the reader gain a deeper understanding of the development and content of quantum mechanics than any other text at this level.
Abstract The systematic study of the physical world had its orgins in philosophy; two-and-a-half millennia later, the scientific advances of the twentieth century are bringing the two fields closer together again. In this brilliant new textbook, Lawrence Sklar gives a broad overview of contemporary philosophy of physics which readers at all levels, especially students, should find accessible and engaging. Professor Sklar provides a clear and accurate guide to the key topics: the nature of space and time, the problems of probability and irreversibility in statistical mechanics, and, of course, the many notorious problems raised by quantum mechanics. He discusses sophisticated scientific questions, but avoids the use of technical formalism, so that the discussion will be accessible to those without a training in philosophy or physics.
The twentieth century has seen two major revolutions in our theories of physics concerning nature, and these have made us change many of our concepts about the terms in which nature can be described. The new theories born in these revolutions are the theory of relativity and of quantum mechanics. The biological sciences had their revolutions in the nineteenth century, and while remarkable progress has been made since, nothing comparable to that upheaval has occurred in this century. Of the two massive changes in the concepts of the physical sciences, we can discuss but one here. [excerpt]