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Pre-historic Times

Author: Sir John Lubbock
Publisher:
ISBN:
Category : Archaeology
Languages : en
Pages : 504

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Book Description

Time's Arrow and Archimedes' Point

Author: Huw Price
Publisher: Oxford University Press
ISBN: 0199839328
Category : Philosophy
Languages : en
Pages : 321

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Book Description
Why is the future so different from the past? Why does the past affect the future and not the other way around? What does quantum mechanics really tell us about the world? In this important and accessible book, Huw Price throws fascinating new light on some of the great mysteries of modern physics, and connects them in a wholly original way. Price begins with the mystery of the arrow of time. Why, for example, does disorder always increase, as required by the second law of thermodynamics? Price shows that, for over a century, most physicists have thought about these problems the wrong way. Misled by the human perspective from within time, which distorts and exaggerates the differences between past and future, they have fallen victim to what Price calls the "double standard fallacy": proposed explanations of the difference between the past and the future turn out to rely on a difference which has been slipped in at the beginning, when the physicists themselves treat the past and future in different ways. To avoid this fallacy, Price argues, we need to overcome our natural tendency to think about the past and the future differently. We need to imagine a point outside time -- an Archimedean "view from nowhen" -- from which to observe time in an unbiased way. Offering a lively criticism of many major modern physicists, including Richard Feynman and Stephen Hawking, Price shows that this fallacy remains common in physics today -- for example, when contemporary cosmologists theorize about the eventual fate of the universe. The "big bang" theory normally assumes that the beginning and end of the universe will be very different. But if we are to avoid the double standard fallacy, we need to consider time symmetrically, and take seriously the possibility that the arrow of time may reverse when the universe recollapses into a "big crunch." Price then turns to the greatest mystery of modern physics, the meaning of quantum theory. He argues that in missing the Archimedean viewpoint, modern physics has missed a radical and attractive solution to many of the apparent paradoxes of quantum physics. Many consequences of quantum theory appear counterintuitive, such as Schrodinger's Cat, whose condition seems undetermined until observed, and Bell's Theorem, which suggests a spooky "nonlocality," where events happening simultaneously in different places seem to affect each other directly. Price shows that these paradoxes can be avoided by allowing that at the quantum level the future does, indeed, affect the past. This demystifies nonlocality, and supports Einstein's unpopular intuition that quantum theory describes an objective world, existing independently of human observers: the Cat is alive or dead, even when nobody looks. So interpreted, Price argues, quantum mechanics is simply the kind of theory we ought to have expected in microphysics -- from the symmetric standpoint. Time's Arrow and Archimedes' Point presents an innovative and controversial view of time and contemporary physics. In this exciting book, Price urges physicists, philosophers, and anyone who has ever pondered the mysteries of time to look at the world from the fresh perspective of Archimedes' Point and gain a deeper understanding of ourselves, the universe around us, and our own place in time.

Time’s Arrow, Time’s Cycle

Author: Stephen Jay Gould
Publisher: Harvard University Press
ISBN: 9780674891999
Category : Science
Languages : en
Pages : 242

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Book Description
Examines scientific theories pertaining to the measurement of earth's history.

Time's Arrows Today

Author: Steven F. Savitt
Publisher: Cambridge University Press
ISBN: 9780521599450
Category : Science
Languages : en
Pages : 348

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Book Description
While experience tells us that time flows from the past to the present and into the future, a number of philosophical and physical objections exist to this commonsense view of dynamic time. In an attempt to make sense of this conundrum, philosophers and physicists are forced to confront fascinating questions, such as: Can effects precede causes? Can one travel in time? Can the expansion of the Universe or the process of measurement in quantum mechanics define a direction in time? In this book, researchers from both physics and philosophy attempt to answer these issues in an interesting, yet rigorous way. This fascinating book will be of interest to physicists and philosophers of science and educated general readers interested in the direction of time.

Time's Arrows

Author: Richard Morris
Publisher: Simon and Schuster
ISBN: 0671617664
Category : Science
Languages : en
Pages : 248

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Book Description
This volume explores Western views on time from ancient Greece through the Middle Ages, going on to modern scientific concepts, including relativity, biological time, cosmic time, and whether there is a beginning (or an end) to time. Starting with ancient cyclical theories of time, the author moves on to more modern topics such as the theory of linear time, the notion that velocity is a function of time (introduced by Galileo), Newton's mathematical explanations of time, the laws of thermodynamics in relation to time, and the theory of relativity.

Time's Arrows and Quantum Measurement

Author: Lawrence S. Schulman
Publisher: Cambridge University Press
ISBN: 9780521567756
Category : Science
Languages : en
Pages : 370

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Book Description
An introduction to the arrow of time and a new, related, theory of quantum measurement.