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How the World Agrees on the Time: From Sundials to Atomic Clocks: The Hidden Network That Keeps the World Ticking - Softcover
Inhaltsangabe
Ask anyone what time it is and they will glance at a phone without a second thought. Yet behind that instant answer lies one of the quietest triumphs of the modern world: a global agreement, maintained every moment of every day, on what time it actually is. How did a planet of billions of people and machines come to share a single, invisible heartbeat?
In this vivid, accessible book, Edward Callenford traces the story of timekeeping from sundials and the rotating Earth to the pendulum, the quartz crystal, and the atomic clock that now defines the second itself. He explains how the world’s laboratories blend hundreds of clocks into Coordinated Universal Time, why leap seconds are added to keep pace with a wobbling planet, and how time signals race through radio, satellites, and the internet to reach your wrist. Every idea is grounded in real inventors, real machines, and real decisions—from the astronomers who watched the stars to the physicists who counted the vibrations of an atom.
Featuring original diagrams that make the flow of time easy to picture, this is a book for the curious reader, the traveler, and anyone who has ever set a clock without asking how the world knows the hour. You will discover that precise time quietly underpins GPS, global finance, and the internet—and you will never take a passing second for granted again.
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How the World Agrees on the Time
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How the World Agrees on the Time (Paperback)
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Paperback. Zustand: new. Paperback. Ask anyone what time it is and they will glance at a phone without a second thought. Yet behind that instant answer lies one of the quietest triumphs of the modern world: a global agreement, maintained every moment of every day, on what time it actually is. How did a planet of billions of people and machines come to share a single, invisible heartbeat?In this vivid, accessible book, Edward Callenford traces the story of timekeeping from sundials and the rotating Earth to the pendulum, the quartz crystal, and the atomic clock that now defines the second itself. He explains how the world's laboratories blend hundreds of clocks into Coordinated Universal Time, why leap seconds are added to keep pace with a wobbling planet, and how time signals race through radio, satellites, and the internet to reach your wrist. Every idea is grounded in real inventors, real machines, and real decisions-from the astronomers who watched the stars to the physicists who counted the vibrations of an atom.Featuring original diagrams that make the flow of time easy to picture, this is a book for the curious reader, the traveler, and anyone who has ever set a clock without asking how the world knows the hour. You will discover that precise time quietly underpins GPS, global finance, and the internet-and you will never take a passing second for granted again. This item is printed on demand. Shipping may be from multiple locations in the US or from the UK, depending on stock availability. Bestandsnummer des Verkäufers 9798188696634
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How the World Agrees on the Time: From Sundials to Atomic Clocks: The Hidden Network That Keeps the World Ticking
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How the World Agrees on the Time : From Sundials to Atomic Clocks: The Hidden Network That Keeps the World Ticking
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Taschenbuch. Zustand: Neu. Neuware - Ask anyone what time it is and they will glance at a phone without a second thought. Yet behind that instant answer lies one of the quietest triumphs of the modern world: a global agreement, maintained every moment of every day, on what time it actually is. How did a planet of billions of people and machines come to share a single, invisible heartbeat In this vivid, accessible book, Edward Callenford traces the story of timekeeping from sundials and the rotating Earth to the pendulum, the quartz crystal, and the atomic clock that now defines the second itself. He explains how the world's laboratories blend hundreds of clocks into Coordinated Universal Time, why leap seconds are added to keep pace with a wobbling planet, and how time signals race through radio, satellites, and the internet to reach your wrist. Every idea is grounded in real inventors, real machines, and real decisions-from the astronomers who watched the stars to the physicists who counted the vibrations of an atom.Featuring original diagrams that make the flow of time easy to picture, this is a book for the curious reader, the traveler, and anyone who has ever set a clock without asking how the world knows the hour. You will discover that precise time quietly underpins GPS, global finance, and the internet-and you will never take a passing second for granted again. Bestandsnummer des Verkäufers 9798188696634
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How the World Agrees on the Time (Paperback)
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Paperback. Zustand: new. Paperback. Ask anyone what time it is and they will glance at a phone without a second thought. Yet behind that instant answer lies one of the quietest triumphs of the modern world: a global agreement, maintained every moment of every day, on what time it actually is. How did a planet of billions of people and machines come to share a single, invisible heartbeat?In this vivid, accessible book, Edward Callenford traces the story of timekeeping from sundials and the rotating Earth to the pendulum, the quartz crystal, and the atomic clock that now defines the second itself. He explains how the world's laboratories blend hundreds of clocks into Coordinated Universal Time, why leap seconds are added to keep pace with a wobbling planet, and how time signals race through radio, satellites, and the internet to reach your wrist. Every idea is grounded in real inventors, real machines, and real decisions-from the astronomers who watched the stars to the physicists who counted the vibrations of an atom.Featuring original diagrams that make the flow of time easy to picture, this is a book for the curious reader, the traveler, and anyone who has ever set a clock without asking how the world knows the hour. You will discover that precise time quietly underpins GPS, global finance, and the internet-and you will never take a passing second for granted again. This item is printed on demand. Shipping may be from our UK warehouse or from our Australian or US warehouses, depending on stock availability. Bestandsnummer des Verkäufers 9798188696634
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