Time and Navigation PDF ePub eBook

Books Info:

Time and Navigation free pdf If you want to know where you are, you need a good clock. The surprising connection between time and placeis explored in"Time 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."

About Andrew Johnston

ANDREW K. JOHNSTON is a geographer at the National Air and Space Museum, where he researches earth science and environmental change and performs outreach on earth and space science. ROGER D. CONNOR is curator of instruments and avionics at the National Air and Space Museum. CARLENE E. STEPHENS is the curator of timekeeping at the National Museum of American History. PAUL E. CERUZZI is the curator of aerospace electronics and computing at the National Air and Space Museum. The Smithsonian s National Air and Space Museum possesses one of the largest collections of aviation and space artifacts in the world. The Smithsonian s National Museum of American History explores the richness and complexity of the nation s history. Both museums welcome millions of visitors a year, making them among the most visited museums in the world."

Details Book

Author : Andrew Johnston
Publisher : Smithsonian Books
Data Published : 02 July 2015
ISBN : 1588344916
EAN : 9781588344915
Format Book : PDF, Epub, DOCx, TXT
Number of Pages : 224 pages
Age + : 15 years
Language : English
Rating :

Reviews Time and Navigation



17 Comments Add a comment




Related eBooks Download


  • Time and Navigation free pdfTime and Navigation

    If you want to know where you are. you need a good clock. The surprising connection between time and placeis explored in"Time and Navigation: The Untold Story of Getting from Here to There..


  • A Primer of Air Navigation free pdfA Primer of Air Navigation

    Excerpt from A Primer of Air Navigation Prior to the year 1919 there was little occasion for long-distance air navigation: the subject has. however. become one which requires study. and the remarkable transatlantic flights of 1919 have shown that the art of sea navigation can with suitable modifications be applied to the air..


  • Navigation in the Mountains free pdfNavigation in the Mountains

    Written by one of the best known navigation instructors in the UK this is the definitive and comprehensive 'how to navigate' textbook. It covers every aspect of mountain navigation- summer..


  • Navigation in the Mountains free pdfNavigation in the Mountains

    Written by one of the best known navigation instructors in the UK this is the definitive and comprehensive 'how to navigate' textbook. It covers every aspect of mountain navigation- summer. winter and overseas..


  • Inshore Navigation free pdfInshore Navigation

    Inshore Navigation is a teaching system designed for the newcomer to navigation and pilotage. Tom Cunliffe understands the problems and misconceptions of people learning to navigate at sea. As a result his book goes straight to the heart of each topic and concentrates on what the beginner really needs to know when out on the water..


  • Time and Navigation free pdfTime and Navigation

    . If you want to know where you are, you need a good clock. The surprising connection between time and placeis explored in"Time and Navigation: The Untold Story of Getting from Here to There," the com