Paradox av Jim Al-Khalili

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<p><b>Jim Al-Khalili is about to untangle the world''s greatest science conundrums...</b><br><b>___________</b><br><br>How does the fact that it gets dark at night prove the Universe must have started with a big bang? <br><br>Where are all the aliens? <br><br>Why does the length of a piece of string vary depending on how fast it is moving?<br><br>Our subject is ''perceived paradoxes'' - questions or thought-experiments that on first encounter seem impossible to answer, <b>but which science has been able to solve. </b><br><br>Our tour of these mind-expanding puzzles will take us through some of the greatest hits of science - from Einstein''s theories about space and time, to the latest ideas of how the quantum world works. Some of our paradoxes may be familiar, such as Schr¿dinger''s famous cat, which is seemingly alive and dead at the same time; or the Grandfather Paradox - if you travelled back in time and killed your grandfather you would not have been born and would not therefore ha