âAn elegant and accessibleâ investigation of quantum mechanicsââhighly recommendedâ for students of the sciences, sci-fi fans, and anyone interested in the strange world of quantum physics (Forbes)
Rules of the quantum world seem to say that a cat can be both alive and dead at the same time and a particle can be in two places at once. And that particle is also a wave; everything in the quantum world can described in terms of wavesâor entirely in terms of particles. These interpretations were all established by the end of the 1920s, by Erwin SchrÃļdinger, Werner Heisenberg, Paul Dirac, and others. But no one has yet come up with a commonsense explanation of what is going on. In this concise and engaging book, astrophysicist John Gribbin offers an overview of six of the leading interpretations of quantum mechanics.
Gribbin calls his account âagnostic,â explaining that none of these interpretations is any betterâor any worseâthan any of the others. Gribbin presents:
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âĸ The Copenhagen Interpretation, promoted by Niels Bohr and named by Heisenberg
âĸ The Pilot-Wave Interpretation, developed by Louis de Broglie
âĸ The Many Worlds Interpretation
âĸ The Decoherence Interpretation
âĸ The Ensemble âNon-Interpretationâ
âĸ The Timeless Transactional Interpretation, which theorized waves going both forward and backward in time
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 All of these interpretations are crazy, Gribbin warns, and some are more crazy than othersâbut in the quantum world, being more crazy does not necessarily mean more wrong.