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The Book of Time
註釋" We consider that we are constantly aware of the passage of time, and yet we understand next to nothing of its nature. In an instinctive way, we accept time as invariant, immutable, and feel somehow that the foundations of our world are rocking when we are told that the passage of time does indeed vary, depending on the situation of the person measuring that passage. Our surprise is a result of thousands of years of conditioning, during which Man has measured time with ever greater accuracy and hence come increasingly to rely upon its inviolability. The book takes as its subject time and Man's relationship with it. The scope includes many aspects of philosophy, hstory, anthropology, horology and physical science, and it is this multidisciplinary nature which is the source of The Book of Time's unique fascination. Among the topics discussed are the measurements of time, from the earliest crude sundials to the most refined modern atomic clocks, the development of the calendar, the cycle of the seasons, biological clocks and 'bodytime', the measurement of the timescales of the reote past over the thirteen billion years since the Universe was born, and the phenomena that defy all normal rules of common sense and yet are direct manifestations of the real nature of time. 'The Book of Time' is, in addition, full of absorbing sidelights on subjects as diverse at the harmony of the spheres, the reasons why all human beings have approximately the same pulse-rate, the evolution of the clock escapement, and the possibilities of time travel and the paradoxes inherent therein. 'The Book of Time' is by a panel of seven distinguished authors, each of whom has written that section of the book most closely allied to his own field." -- Book Jacket.