This is a book about the meaning of time, what it is, when it has started, how it flows and where to. It examines the consequences of Einstein's theory of relativity and offers startling suggestions about what recent research may reveal.

The traditional association between time and creation is at the heart of science, cosmology, and religion. When scientists began to explore the implications of Einstein's time for the universe as a whole, they discovered that time is elastic, and can be warped by rapid motion or gravitation, that time cannot be meaningfully divided into past, present, and future, nor does time ...(展开全部)

We all know that water and sound move in waves-but gravity? In Marcia Bartusiak's new book, we are introduced to the physics of gravity waves-or vibrations in space-time. We learn about the new generation of observatories, now being completed worldwide, that will give astronomers not just a new window on the cosmos but a whole new sense with which to explore the heavens. Inst...(展开全部)

The China Society for People's Friendship Studies （PFS） in cooperation with the Foreign Languages Press （FLP） in Beijing has arranged for re-publication, in the series entitled Light on China, of some fifty books written in English between the 1860s and the founding years of the People's Republic, by journalistic and other sympathetic eyewitnesses of the revolutionary events de...(展开全部)

伊斯雷尔·爱泼斯坦（Israel Epstein），国际知名记者、作家。1915年出生在波兰华沙，1917年跟随父母移居中国。长年为美国合众社、《纽约时报》等报道中国。抗日战争期间，对正面战场和敌后战场均有深入报道。既奔赴南京、广州、武汉及山东台儿庄前线战场采访，也曾突破重重封锁访问延安。此外，他还应宋庆龄之邀，在香港参加“保卫中国同盟”，积极宣传中国的抗日斗争并争取国际援助。新中国成立之后，爱泼斯坦应宋庆龄的邀请返回中国，后来加入中国国籍。 爱泼斯坦亲身经历了中国从半殖民地到民族独立、从新中国成立到改革开放的历史巨变。他说：“中国实际上成为我写作的唯一主题。”他的七部主要作品包括： 以抗战为主题的“战争四部曲”：《人民之战》《我访问延安：1944年的通讯和家书》《中国未完成的革命》和《从鸦片战争到解放》。 《西藏的变迁》：这是作者1955—1976...(展开全部)

作者简介 埃里克·方纳（Eric Foner，1943— ），当代美国最有影响力的历史学家之一，美国哥伦比亚大学德威特·克林顿历史讲席教授（荣休），曾任美国历史学家组织主席（1993）和美国历史学会主席（2000）。在美国内战与重建史、奴隶制史、美国政治文化史等领域中成就斐然，著述甚丰。代表作有《自由土地、自由劳动、自由人：内战前共和党的意识形态》《潘恩与革命时期的美国》《重建：美利坚未完成的革命（1863—1877）》《美国自由的故事》《烈火中的考验：亚伯拉罕·林肯与美国奴隶制》《自由之路：“地下铁路”秘史》和《第二次建国：内战与重建如何重铸了美国宪法》等。 译者简介 王希，美国宾夕法尼亚州印第安纳大学杰出教授（Distinguished University Professor），北京大学历史学系特聘教授(2008—2020)。著有《民主的考验：...(展开全部)

This "masterful treatment of one of the most complex periods of American history" ( New Republic ) made history when it was originally published in 1988. It redefined how Reconstruction was viewed by historians and people everywhere in its chronicling of how Americans -- black and white -- responded to the unprecedented changes unleashed by the war and the end of slavery. This ...(展开全部)

A dramatic new account of the parallel quests to harness time that culminated in the revolutionary science of relativity, Einstein's Clocks, Poincare's Maps is "part history, part science, part adventure, part biography, part meditation on the meaning of modernity....In Galison's telling of science, the meters and wires and epoxy and solder come alive as characters, along with ...(展开全部)

A dramatic new account of the parallel quests to harness time that culminated in the revolutionary science of relativity, "Einstein's Clocks, Poincare's Maps" is "part history, part science, part adventure, part biography, part meditation on the meaning of modernity....In Galison's telling of science, the meters and wires and epoxy and solder come alive as characters, along wit...(展开全部)

Which of these bizarre phenomena, if any, can really exist in our universe? Black holes, down which anything can fall but from which nothing can return; wormholes, short spacewarps connecting regions of the cosmos; singularities, where space and time are so violently warped that time ceases to exist and space becomes a kind of foam; gravitational waves, which carry symphonic ac...(展开全部)