From one of the world's most distinguished scientists, the first popular book to present the controversial and exciting ideas behind quantum gravity. The Holy Grail of modern physics is a theory of the universe that unites two seemingly opposing pillars of modern science: Einstein's theory of general relativity, which deals with large-scale phenomena (planets, solar systems a...(展开全部)

作者：Lee Smolin是安达略省滑铁卢Perimeter理论物理研究所的研究人员，滑铁卢大学的助理教授。他拥有罕布什尔学院的学士学位和哈佛大学博士学位，曾任教于耶鲁、锡拉丘兹大学和宾州州立大学。除了在量子引力方面的工作，他还对基本粒子物理、宇宙学和基础量子力学有兴趣。他在1997年出版《宇宙的生命》（牛津大学出版社）一书中探讨了当今物理学和宇宙学发展的哲学内涵。

Quantum gravity is perhaps the most important open problem in fundamental physics. It is the problem of merging quantum mechanics and general relativity, the two great conceptual revolutions in the physics of the twentieth century. The loop and spinfoam approach, presented in this 2004 book, is one of the leading research programs in the field. The first part of the book discus...(展开全部)

Quantum gravity poses the problem of merging quantum mechanics and general relativity, the two great conceptual revolutions in the physics of the twentieth century. The loop and spinfoam approach, presented in this book, is one of the leading research programs in the field. The first part of the book discusses the reformulation of the basis of classical and quantum Hamiltonian ...(展开全部)

What are time and space made of? Where does matter come from? And what exactly is reality? Theoretical physicist Carlo Rovelli has spent his whole life exploring these questions and pushing the boundaries of what we know. Here he explains how our image of the world has changed over the last few dozen centuries. In elegant and accessible prose, Rovelli takes us on a wondrous jou...(展开全部)

卡洛·罗韦利，意大利理论物理学家，圈量子引力理论的开创者之一。曾在美国、意大利工作，现在法国带领量子引力研究小组。著有畅销书《七堂极简物理课》，被译为40多种语言，被誉为下一个“史蒂芬·霍金”。

本书为公版书，为不受著作权法限制的作家、艺术家及其它人士发布的作品，供广大读者阅读交流。汇聚授权电子版权。

Over the years Charles Tilly has had an indelible influence on a remarkable number of key questions in social science and history. In the fields of social change, states and institutions, urbanization, and historical sociology, his seminal work has spawned whole new lines of inquiry and research. In one volume, this book offers the best and most influential of Tilly's importa...(展开全部)

Nationalism is a movement and a state of mind that brings together national identity, consciousness, and collectivities. It accomplished the great transformation from the old order to modernity; it placed imagination above production, distribution, and exchange; and it altered the nature of power over people and territories that shapes and directs the social and political world...(展开全部)