Time and Time-tellers PDF Download

Author: James W. Benson
Publisher:
ISBN:
Category : Clocks and watches
Languages : en
Pages : 208

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Author: Andrew Kenneth Johnston
Publisher:
ISBN: 1588344916
Category : History
Languages : en
Pages : 225

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Book Description
If you want to know where you are, you need a good clock. The surprising connection between time and placeais explored inaTime and Navigation- The Untold Story of Getting from Here to There, the companion book to the National Air and Space Museum exhibition of the same name. Today we use smartphones and GPS, but navigating has not always been so easy. The oldest "clock" is Earth itself, and the oldest means of keeping time came from observing changes in the sky. Early mariners like the Vikings accomplished amazing feats of navigation without using clocks at all. Pioneering seafarers in the Age of Exploration used dead reckoning and celestial navigation; later innovations such as sextants and marine chronometers honed these techniques by measuring latitude and longitude. When explorers turned their sights to the skies, they built on what had been learned at sea. For example, Charles Lindbergh used a bubble sextant on his record-breaking flights. World War II led to the development of new flight technologies, notably radio navigation, since celestial navigation was not suited for all-weather military operations. These forms of navigation were extended and enhanced when explorers began guiding spacecraft into space and across the solar system. Astronauts combined celestial navigation technology with radio transmissions. The development of the atomic clock revolutionized space flight because it could measure billionths of a second, thereby allowing mission teams to navigate more accurately. Scientists and engineers applied these technologies to navigation on earth to develop space-based time and navigation services such as GPS that is used every day by people from all walks of life. While the history of navigation is one of constant change and innovation, it is also one of remarkable continuity. Time and Navigation tells the story of navigation to help us understand where we have been and how we got there so that we can understand where we are going.

Author: Technical College of the Vallee de Joux
Publisher:
ISBN: 9782940025497
Category :
Languages : en
Pages : 376

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Author: James Jespersen
Publisher: Courier Corporation
ISBN: 0486409139
Category : Science
Languages : en
Pages : 322

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Book Description
Clear and accessible introduction to the concept of time examines measurement, historic timekeeping methods, uses of time information, role of time in science and technology, and much more. Over 300 illustrations.

Author:
Publisher:
ISBN:
Category : Industrial arts
Languages : en
Pages : 920

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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 182

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Popular Science gives our readers the information and tools to improve their technology and their world. The core belief that Popular Science and our readers share: The future is going to be better, and science and technology are the driving forces that will help make it better.

Author: Henry Parkinson
Publisher: BoD – Books on Demand
ISBN: 3752580356
Category : Fiction
Languages : en
Pages : 638

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Reprint of the original, first published in 1866.

Author:
Publisher:
ISBN:
Category : Encyclopedias and dictionaries
Languages : en
Pages : 710

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Author: George Daniels
Publisher: Bloomsbury Publishing
ISBN: 085667687X
Category : Art
Languages : en
Pages : 88

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One of George Daniels's central contributions to horology is is co-axial escapement. This book explains the action of the escapement in terms accessible to both expert and layman, and is accompanied by a series of detailed line drawings.

Author: Henry Gordon Harris
Publisher:
ISBN: 9781258812164
Category :
Languages : en
Pages : 178

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