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Lightspeed: The Ghostly Aether and the Race to Measure the Speed of Light
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Lightspeed: The Ghostly Aether and the Race to Measure the Speed of Light (Hardback)

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This book tells the human story of one of man's greatest intellectual adventures - how it came to be understood that light travels at a finite speed, so that when we look up at the stars, we are looking back in time. And how the search for a God-given absolute frame of reference in the universe led most improbably to Einstein's most famous equation E=mc2, which represents the energy that powers the stars and nuclear weapons. From the ancient Greeks measuring the

solar system, to the theory of relativity and satellite navigation, the book takes the reader on a gripping historical journey. We learn how Galileo discovered the moons of Jupiter and used their eclipses as a global clock, allowing travellers to find their Longitude. And how Ole Roemer, noticing that

the eclipses were a little late, used this to obtain the first measurement of the speed of light, which takes eight minutes to get to us from the sun. We move from the international collaborations to observe the Transits of Venus, including Cook's voyage to Australia, to the achievements of Young and Fresnel, whose discoveries eventually taught us that light travels as a wave but arrives as a particle, and all the quantum weirdness which follows. In the nineteenth century, we find Faraday and

Maxwell, struggling to understand how light can propagate through the vacuum of space unless it is filled with a ghostly vortex Aether foam. We follow the brilliantly gifted experimentalists Hertz, discoverer of radio, Michelson with his search for the Aether wind, and Foucault and Fizeau with their

spinning mirrors and lightbeams across the rooftops of Paris. Messaging faster than light using quantum entanglement, and the reality of the quantum world, conclude this saga.

Science & MathematicsPhysicsOptics the study of lightScience & MathematicsPhysicsRelativity physicsScience & MathematicsScience: general issuesHistory of scienceScience & MathematicsScience: general issuesPopular scienceTechnicalOther technologies & applied sciencesSpace science Publisher: Oxford University Press Publication Date: 28/10/2019 ISBN-13: 9780198841968  Details: Type: Hardback Format: Books
Availability: Pre-order for despatch on publication. Pre-Order

John C. H. Spence FRS is Snell Professor of Physics at Arizona State University, where he teaches condensed matter physics with research in biophysics. He is currently Director of Science for the National Science Foundation's eight-campus "BioXFEL" consortium. This is devoted to applications of the recently invented hard x-ray free-electron laser to structural biology, providing movies of molecular machines at work with femtosecond time resolution. John is the author of texts on electron microscopy, and a keen musician, pilot and sailor.

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