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Julian Barbour

    Barbour hat sich seit seiner Promotion in den Grundlagen von Einsteins allgemeiner Relativitätstheorie an der Universität zu Köln im Jahr 1968 ohne akademische Anstellung durch Teilzeitarbeit als Übersetzer unterhalten. Seine Forschungsinteressen liegen in der Quantengravitation und der Wissenschaftsgeschichte.

    Il punto di Giano. Una nuova teoria del tempo
    Nowa teoria czasu
    The End of Time: The Next Revolution in Physics
    Janus Point
    The End Of Time
    The Janus Point
    • What is time? The Janus Point offers a ground-breaking solution to one of the greatest mysteries in physics. For over a century, the greatest minds have sought to understand why time seems to flow in one direction, ever forward. In The Janus Point, Julian Barbour offers a radically new answer: it doesn't. At the heart of this book, Barbour provides a new vision of the Big Bang - the Janus Point - from which time flows in two directions, its currents driven by the expansion of the universe and the growth of order in the galaxies, planets and life itself. What emerges is not just a revolutionary new theory of time, but a hopeful argument about the destiny of our universe. 'Both a work of literature and a masterpiece of scientific thought' Lee Smolin, author of The Trouble with Physics 'Profound...original...accessible to anyone who has pondered the mysteries of space and time' Martin Rees, Astronomer Royal 'Takes on fundamental questions, offering a new perspective on how the Universe started and where it may be headed' Science Magazine

      The Janus Point
    • The End Of Time

      • 384 Seiten
      • 14 Lesestunden
      3,8(61)Abgeben

      A brilliant theoretical physicist argues that the solution to the ultimate question in science: how to unify Einstein's theory of general relativity with quantum mechanics, is possible only if we abolish time from the foundations of the universe. In other words, despite our deepest intuitions, time does not exist. schovat popis

      The End Of Time
    • Janus Point

      • 416 Seiten
      • 15 Lesestunden
      3,5(20)Abgeben

      "Time seems commonplace, but it is perhaps the Universe's greatest mystery. At a basic level, the laws of physics say it should be able to flow either forward or backward. And yet we -- and it seems everything in the entire Universe -- experience it in only one direction. Most physicists think they have the answer. In The Janus Point, Julian Barbour argues that those physicists have it all wrong. The most common descriptions of time rely on the concept of entropy, a measure of disorder. According to a common interpretation of entropy, it inevitably increases in the Universe. And that increase is what we experience as the flow of time. Barbour attacks this reasoning on several fronts. First, he shows that their premises are all off: the concept of entropy, originally developed to describe the behavior of steam engines, is inappropriately applied to the Universe as a whole. Second, he demonstrates that it isn't disorder, but order, that increases as the Universe has developed from the highly energetic but uniform blob that existed after the Big Bang to the highly structured universe -- full of galaxies, stars, planets, and life -- that we live in today. Third he shows that, if we run that tape of increasing complexity in reverse, we reach a point he calls the Janus Point, a reimagined Big Bang from which time actually did flow forth in two directions, of which we only experience one. This may sound impossible, but the leading theory of physics today, string theory, predicts that we live in just one of 10^500 different universes. In that context, the argument that we live in one of two possible timelines seems much more reasonable indeed. And fourth, and perhaps most important of all, is the implication of The Janus Point for the destiny of our Universe. If the entropists are correct, our Universe is doomed to a future of useless disorder, where nothing -- no memory, no poetry, no beauty -- can exist. If Barbour is correct, the destiny of our Universe is in fact one of limitless potential, where all things we, or anyone, could care about can grow without bound. It is hard to think of a theoretical prediction that could be more hopeful than that. This is the promise of The Janus Point. The product of almost fifty years' work in physics, spanning from thermodynamics to cosmology, relativity to quantum mechanics, The Janus Point is destined to be a classic: read and re-read, argued with and championed. It is proof that the dogged pursuit of apparently commonplace questions can lead to some of the biggest revolutions of all"-- Provided by publisher

      Janus Point
    • Provides basic evidence for the nonexistence of time, explaining what a timeless universe is like and showing how the nonexistence of time solves a great paradox of modern science.

      The End of Time: The Next Revolution in Physics
    • „Historia jest ścieżką, która wije się przez przestrzeń kształtów” - pisze Julian Barbour w swojej nowej opowieści o Wszechświecie. Podążając tą ścieżką nie dojdziemy, jak sugeruje większość teorii kosmologicznych, do smutnego końca, czyli śmierci cieplnej. Opowieść Barboura jest dowodem oświeconej nadziei, z którą ten znakomity brytyjski fizyk i kosmolog spogląda w daleką przyszłość. Wszechświat widziany jego oczami nie jest osuwaniem się w degradację i Wielkie Otępienie, a wielkim stawaniem się, dążeniem ku pięknu. W wyjątkowej, naukowej, ale też zaskakująco osobistej książce Barbour zdaje relację z trwającego blisko pół wieku procesu budowania teorii, która podsuwa odpowiedź na pytanie o naturę czasu. W jego teorii kształtów kosmos jest względem owego czasu symetryczny. Żaden kierunek nie zostaje wyróżniony. Nie ma początku ani końca. W swoich poszukiwaniach Barbour przemierza zapomniane terytoria nauki. Historia nie jest dla niego cmentarzem możliwości, a przestrzenią potencjalnie rewolucyjnych inspiracji. Także w tym sensie dla Juliana Barboura czas zdaje się istnieć inaczej niż zwykliśmy sądzić.

      Nowa teoria czasu