As the twentieth century ended, computers, the Internet, and nanotechnology were central to modern American life. Yet the physical advances underlying these applications are poorly understood and underappreciated by U.S. citizens. In this overview, Cassidy views physics through America's engagement with the political events of a tumultuous century.

How does the physics we know today - a highly professionalised enterprise, inextricably linked to government and industry - link back to its origins as a liberal art in Ancient Greece? Heilbron's crisp and witty book tells the 2500-year story and highlights the implications for humankind's self-understanding.

Publisher description

At the end of the nineteenth century, some physicists believed that the basic principles underlying their subject were already known, and that physics in the future would only consist of filling in the details. They could hardly have been more wrong. The past century has seen the rise of quantum mechanics, relativity, cosmology, particle physics, and solid-state physics, among other fields. These subjects have fundamentally changed our understanding of space, time, and matter. They have also transformed daily life, inspiring a technological revolution that has included the development of radio, television, lasers, nuclear power, and computers. In Quantum Generations, Helge Kragh, one of the world's leading historians of physics, presents a sweeping account of these extraordinary achievements of the past one hundred years. The first comprehensive one-volume history of twentieth-century physics, the book takes us from the discovery of X rays in the mid-1890s to superstring theory in the 1990s. Unlike most previous histories of physics, written either from a scientific perspective or from a social and institutional perspective, Quantum Generations combines both approaches. Kragh writes about pure science with the expertise of a trained physicist, while keeping the content accessible to nonspecialists and paying careful attention to practical uses of science, ranging from compact disks to bombs. As a historian, Kragh skillfully outlines the social and economic contexts that have shaped the field in the twentieth century. He writes, for example, about the impact of the two world wars, the fate of physics under Hitler, Mussolini, and Stalin, the role of military research, the emerging leadership of the United States, and the backlash against science that began in the 1960s. He also shows how the revolutionary discoveries of scientists ranging from Einstein, Planck, and Bohr to Stephen Hawking have been built on the great traditions of earlier centuries. Combining a mastery of detail with a sure sense of the broad contours of historical change, Kragh has written a fitting tribute to the scientists who have played such a decisive role in the making of the modern world.

Born into a wealthy, secular New York Jewish family, a student of the Ethical Culture School in New York, later educated in theoretical physics at Harvard, Cambridge (UK) and Göttingen (Germany), appointed professor at UC-Berkeley and Caltech, J. Robert Oppenheimer (1904-1967) was on the forefront of the rise of theoretical physics in the United States to world-class status, contributing to the century-altering success of the Manhattan Project to build the atomic bomb. As the scientific leader of that project, Oppenheimer played a key advisory role in government, helping to forge the post-war military-industrial-scientific alliance that poured huge resources into post-war “big science.” Because of his position, Oppenheimer became for the public the heroic cultural icon of American science, but he also became a target and a tragic victim of the cold-war fear and nuclear war preparations underlying the McCarthy era. This biographical study focuses on Oppenheimer’s cultural and intellectual rise as a theoretical physicist as well as his role within the trajectory of the nation’s rise to scientific leadership and the post-war forces that confronted American science. This biography is nearly unique in that it includes discussions for general audiences of Oppenheimer’s work and contributions to theoretical physics, including his famous prediction of black holes sixty years before their confirmed discovery. “Now David Cassidy brings us the best account of Oppenheimer’s life in science with J. Robert Oppenheimer and the American Century.” — T. Powers, New York Review of Books “Cassidy covers this ground admirably in his thoughtful biography of Oppenheimer.” —Scientific American “Cassidy’s book...is probably the best single study of Oppenheimer to date.” — B. Bernstein, Physics World “Cassidy’s biography of J. Robert Oppenheimer is a concise, well-written book about the life of the famous 20th century scientist... A worthwhile read for anyone with an interest in the coming of age of American physics and how the weaknesses and strengths of one of its leaders shaped the relationship between science and the government for decades to come.” — Physics and Society “This biography is a detailed and beautifully written work. Cassidy expands beyond the traditional scope of a biography and expertly explores the surrounding environment that shaped Oppenheimer’s life.” — Atomic Archive “This excellent biography of J. Robert Oppenheimer places the eminent physicist in the context of twentieth century America... Cassidy... provides excellent insights into the life and times of this complex man. Unlike many other biographers of Oppenheimer, Cassidy assesses his role as a twentieth century theoretical physicist.” — Alsos Digital Library for Nuclear Issues “A superbly researched biography... There is no doubt that Cassidy gives us a valuable perspective on Oppenheimer’s life. The author is shy neither of editorializing nor of making judgments about the personalities who appear in the story... These comments are almost unfailingly fair and justified by the evidence.” — Times Higher Education “Cassidy... has written a book that neither praises Oppenheimer nor buries his reputation but, rather, puts some tarnish upon the icon.” — G. Herken, Science

The historian John Lukacs offers a concise history of the twentieth century—its two world wars and cold war, its nations and leaders. The great themes woven through this spirited narrative are inseparable from the author’s own intellectual preoccupations: the fading of liberalism, the rise of populism and nationalism, the achievements and dangers of technology, and the continuing democratization of the globe. The historical twentieth century began with the First World War in 1914 and ended seventy-five years later with the collapse of the Soviet Empire in 1989. The short century saw the end of European dominance and the rise of American power and influence throughout the world. The twentieth century was an American century—perhaps the American century. Lukacs explores in detail the phenomenon of national socialism (national socialist parties, he reminds us, have outlived the century), Hitler’s sole responsibility for the Second World War, and the crucial roles played by his determined opponents Churchill and Roosevelt. Between 1939 and 1942 Germany came closer to winning than many people suppose. Lukacs casts a hard eye at the consequences of the Second World War—the often misunderstood Soviet-American cold war—and at the shifting social and political developments in the Far and Middle East and elsewhere. In an eloquent closing meditation on the passing of the twentieth century, he reflects on the advance of democracy throughout the world and the limitations of human knowledge.

Late historian Martin J. Sklar's analysis of how modernizing worldwide development has been the focus of US foreign policy.