Sailors have been navigating the seas for thousands of years, and navigational technology has progressed exponentially during that time. This concise yet comprehensive volume begins with the impressive developments in navigation made by early navigators and follows the art and science of navigation through the ages to their culmination in the huge advances made by our contemporaries. With a focus on the navigational tools invented by each age and civilization, Launer traces the evolution of humankind¿s navigational skills from the Kamal of the Arabs and the Lead-line first used by the Romans to the radio and satellite communication devices available to modern sailors. He pays homage to the Polynesians who, in the absence of a written language were able to pass down their navigational skills through generations, and to the adventurous Vikings, who managed to find their way from Scandinavia to England, Iceland, Greenland and beyond; but he also covers the practical applications of the complex technologies found on most boats today, such as GPS. Generous illustrations help readers envision the tools in use. Navigation Through the Ages will appeal to sailors and lay readers alike¿anyone with an interest in the history of science and the exploration of our world.

Many books on celestial navigation take shortcuts in explaining concepts; incorrect diagrams and discussion are often used for the sake of moving the student along quickly. This book tells the true story-and the whole story. It conveys celestial navigation concepts clearly and in the shortest possible time.It's tailored for navigation in the GPS age-a time of computers, calculators, and web resources. Although it covers all of the traditional methods of 'working a sight, ' the primary thrust is using the (under $10) scientific calculator. By using equations that you key into your calculator, this book guides you toward a better understanding of the concepts of celestial navigation.You will learn novel ways to plot lines of position, ways to check your sextant accurately by star sights, and how to tell what time it is from a moon sight. The many appendices are a treasure of references and explanations of abstract ideas. Celestial Navigation is a crucial skill for the offshore navigator to know, this book provides the shortest path to that knowledge.

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.

A large format, meticulously researched, lavishly illustrated and fully international history of mankind's seaborne voyages from the Phoenicians and Chinese to modern navies and round-the-world sailing yachts. Royal prestige, intellectual curiosity, commerce and territorial expansion all propelled mankind to make perilous voyages across unpredictable oceans to find out what lay beyond the horizon, and the art of navigation allowed them to do so. From initial conjecture and philosophical reason, man ventured forth to glean first-hand information of the seas by exploration and scientific investigation. The author pieces together the advances in astronomy, navigation, shipbuilding and surveying through the ages to tell the fascinating and absorbing history of navigation and exploration in an elegant volume that is beautifully illustrated with manuscripts and rutters, portolans and sea charts, ship's instruments and artefacts. The meticulous research, based on original sources, has brought to light a lot of new information, which in some cases contradicts popular held beliefs. The book opens with the basic questions and challenges of navigation. Part 2 unravels the development of science and seafaring from the ancient times to the Mediterranean era. This created a basis for longer sailings, which are at the heart of Part 3 and in Part 4 the book ends with the advanced technology that made it possible to determine a ship's exact position at sea.

Provides an overview of the development of technologies that eventually led to the modern era of knowing where you are at every moment, from radio signals that carried telegraph messages, to invisible ship-guiding beacons, to GPS. 17,500 first printing.

An essential guide to tackling what students, families, and educators can do now to cut through stress and performance pressure, and find a path to purpose. Today’s college-bound kids are stressed, anxious, and navigating demands in their lives unimaginable to a previous generation. They’re performance machines, hitting the benchmarks they’re “supposed” to in order to reach the next tier of a relentless ladder. Then, their mental and physical exhaustion carries over right into first jobs. What have traditionally been considered the best years of life have become the beaten-down years of life. Belle Liang and Timothy Klein devote their careers both to counseling individual students and to cutting through the daily pressures to show a better way, a framework, and set of questions to find kids’ “true north”: what really turns them on in life, and how to harness the core qualities that reveal, allowing them to choose a course of study, a college, and a career. Even the gentlest parents and teachers tend to play into pervasive societal pressure for students to PERFORM. And when we take the foot off the gas, we beg the kids to just figure out what their PASSION is. Neither is a recipe for mental or physical health, or, ironically, for performance or passion. How to Navigate Life shows that successful human beings instead tap into their PURPOSE—the why behind the what and how. Best of all, purpose is a completely translatable quality to every aspect of life, from first jobs to last jobs and everything in between.

The Sky Atlas unveils some of the most beautiful maps and charts ever created during humankind's quest to map the skies above us. This richly illustrated treasury showcases the finest examples of celestial cartography—a glorious art often overlooked by modern map books—as well as medieval manuscripts, masterpiece paintings, ancient star catalogs, antique instruments, and other curiosities. This is the sky as it has never been presented before: the realm of stars and planets, but also of gods, devils, weather wizards, flying sailors, ancient aliens, mythological animals, and rampaging spirits. • Packed with celestial maps, illustrations, and stories of places, people, and creatures that different cultures throughout history have observed or imagined in the heavens • Readers are taken on a tour of star-obsessed cultures around the world, learning about Tibetan sky burials, star-covered Inuit dancing coats, Mongolian astral prophets and Sir William Herschel's 1781 discovery of Uranus, the first planet to be found since antiquity. • A gorgeous book that delights stargazers and map lovers alike With thrilling stories and gorgeous artwork, this remarkable atlas explores our fascination with the sky across time and cultures to form an extraordinary chronicle of cosmic imagination and discovery. The Sky Atlas is a wonderful book for map lovers, history buffs, and stargazers, but also for those who are intrigued by the many wonderful and bizarre ways in which humans have sought to understand the cosmos and our place in it. • A unique map book that expands beyond the terrestrial and into the celestial • A wonderful book for map lovers, obscure-history fans, mythology buffs, and astrology and astronomy lovers • Great for those who enjoyed What We See in the Stars: An Illustrated Tour of the Night Sky by Kelsey Oseid, Maps by Aleksandra Mizielinska and Daniel Mizielinski, and Atlas of Remote Islands: Fifty Islands I Have Never Set Foot On and Never Will by Judith Schalansky