Physicists can't yet build time machines but they know that the laws of physics would allow one to exist. Scientists are investigating the manipulation of potential 'natural' time machines such as black holes, and other possibilities. All of these are discussed - not the detail of the mathematical equations, just the results - together with the implications of time travel, such as the 'granny paradox': a time traveller could go back in time, accidentally kill their granny, so the traveller's mother would never be born, so they would never be born, and so on. The Gribbins explain how such paradoxes are, in fact, prevented.
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John Gribbin is a well known and highly respected science writer, broadcaster and journalist, who recently contributed to Melvyn Bragg's On Giants' Shoulders. Mary Gribbin studied psychology and teaches young people with special needs. They have co-written several children's books, as well as the Scientists in 90 minutes series (Constable).Their book 'What's the Big Idea?: Time and the Universe' was the winner of the TES Information Book Award.
Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.
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