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Author: Julie Wakefield
Publisher: National Academies Press
ISBN: 0309167752
Category : Science
Languages : en
Pages : 278
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Book Description
For most people, Edmond Halley is best known for accurately predicting the periodic appearance of the comet that ultimately would bear his name. But his greatest achievement may have been overlookedâ€" indeed few people know that it was Halley who solved the riddle of accurate navigation for all sea-going vessels. As seventeenth-century scientists gradually came to believe that the inside of the Earth was magnetized they were puzzled by the fact magnetic north not only varied slightly from place to place, but gradually changed over time, suggesting a slow variation of the Earth's magnetic field. But if the Earth was permanently magnetized, how could its magnetism vary? Edmond Halley, Britain's Astronomer Royal, ingeniously proposed that the Earth contained a number of spherical shells, one inside the other, each magnetized differently, each slowly rotating in relation to the others. This brilliant deduction earned Halley the command of a small sailing ship, the 52-foot Paramore, and with it, a royal mandate. Halley was to sail forth "to stand so far into the South, till you discover the Coast of the Terra Incognita." But more importantly, determine the variation between true and magnetic north in order to more accurately calculate longitudeâ€"a feat that would improve Britain's navigational skills and ensure its dominance of the high seas. Halley's Quest takes readers on a trilogy of sea voyages, each of which proved to be as novel and revealing as it was difficult and controversial. But more than a yarn of risk and adventure, the story at the core of the book is a deeply personal and intellectual tale that captures the science and the spirit of an almost forgotten episode in the history of navigation. Once branded a heretic by the Church and denied a prestigious scholarly chair at Oxford University, Halley ultimately changed the course of science, producing charts that described more accurate ways to navigate and documenting new geophysical phenomena ranging from ocean patterns to the motion of Jupiter's moons. This delightful book emphasizes the drama of Halley's mission and the passion of an era hungry for the stories science had to tell.
Author: Julie Wakefield
Publisher: National Academies Press
ISBN: 0309167752
Category : Science
Languages : en
Pages : 278
Get Book Here
Book Description
For most people, Edmond Halley is best known for accurately predicting the periodic appearance of the comet that ultimately would bear his name. But his greatest achievement may have been overlookedâ€" indeed few people know that it was Halley who solved the riddle of accurate navigation for all sea-going vessels. As seventeenth-century scientists gradually came to believe that the inside of the Earth was magnetized they were puzzled by the fact magnetic north not only varied slightly from place to place, but gradually changed over time, suggesting a slow variation of the Earth's magnetic field. But if the Earth was permanently magnetized, how could its magnetism vary? Edmond Halley, Britain's Astronomer Royal, ingeniously proposed that the Earth contained a number of spherical shells, one inside the other, each magnetized differently, each slowly rotating in relation to the others. This brilliant deduction earned Halley the command of a small sailing ship, the 52-foot Paramore, and with it, a royal mandate. Halley was to sail forth "to stand so far into the South, till you discover the Coast of the Terra Incognita." But more importantly, determine the variation between true and magnetic north in order to more accurately calculate longitudeâ€"a feat that would improve Britain's navigational skills and ensure its dominance of the high seas. Halley's Quest takes readers on a trilogy of sea voyages, each of which proved to be as novel and revealing as it was difficult and controversial. But more than a yarn of risk and adventure, the story at the core of the book is a deeply personal and intellectual tale that captures the science and the spirit of an almost forgotten episode in the history of navigation. Once branded a heretic by the Church and denied a prestigious scholarly chair at Oxford University, Halley ultimately changed the course of science, producing charts that described more accurate ways to navigate and documenting new geophysical phenomena ranging from ocean patterns to the motion of Jupiter's moons. This delightful book emphasizes the drama of Halley's mission and the passion of an era hungry for the stories science had to tell.
Author:
Publisher:
ISBN:
Category : Astronomy
Languages : en
Pages : 32
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Book Description
Author: Karen Fiala
Publisher: Lulu.com
ISBN: 1411661109
Category : Self-Help
Languages : en
Pages : 450
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Book Description
It's the 21st century and what have we got to show for it? Does humanity really want to continue its downward spiral or are we ready to create a different reality? The purpose of this book is many-fold. 1. It shows you ways in which our civilization can progress. 2. It challenges all the old methods of doing things. 3. It offers workable methods, which have been tried and proven by individuals and communities all over the globe, with the sole purpose of making life better. 4. It is interactive. It offers its readers an invitation to join the AlterQuest Organization and be part of a practical Global Network for the advancement of our world. AlterQuest is the most exciting, inspirational book you will ever read. Its topics will give you unlimited hope for the present and the future. You'll find yourself grasping at every wonderful idea with a renewed sense of enthusiasm. Here at last we have the answers we've all been searching for.
Author: Sir George Clarke Simpson
Publisher:
ISBN:
Category : Antarctica
Languages : en
Pages : 40
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Book Description
Author: Alan H. Cook
Publisher: Oxford University Press
ISBN: 9780198500315
Category : Biography & Autobiography
Languages : en
Pages : 584
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Book Description
Edmond Halley (1656-1742), MA, LLD, FRS, Capt. RN, Savillian Professor of Geometry and Astronomer Royal, stands pre-eminent among Oxford, English, and European scientists. A contemporary of Wren, Pepys, Hooke, Handel, Purcell, and Dryden, he was a schoolboy in London while the Great Fireraged, and was an active participant in the Enlightenment, an age of profound developments in all the arts and sciences. As a younger contemporary of Isaac Newton, he had a crucial part in the Newtonian revolution in the natural sciences. It was Halley who set the question that led Newton to writethe Principia, and who edited, paid for, and reviewed it. In later years he applied the methods of the Principia widely in astronomy and geophysics. Now more widely known for his prediction of the return of "his" comet, Halley discovered the proper motion of stars, made important studies of themoon's motion, and his investigations of the Earth's magnetic field and of tides were unrialled for centuries. His prediction of the transit of Venus led to Cook's voyage to Tahiti. He was far more than an cloistered academic; his exploits as a naval captain led to perilous adventures, and he wasalso a notable servant of the State. Much material about his eventful career has come to light in recent years, making this a timely new account of the life, scientific interests, and continuing influence of this engaging and adventurous scholar. Sir Alan Cook has written a fascinating andilluminating account of Halley's life and science, making this a unique and highly readable biography of one of the key figures of his time.
Author:
Publisher:
ISBN:
Category : Halley's comet
Languages : en
Pages : 586
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Book Description
Author: Sou Leong-Ellerker
Publisher: Penguin Random House South Africa
ISBN: 063700244X
Category : Juvenile Nonfiction
Languages : en
Pages : 97
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Book Description
The guide is user-friendly and practical to support the teaching process of the novel as literary work in the classroom. There if a focus on the following: Historical context on the production of the text, Etymology and Cultural Signifiers, Close-reading Activities, Literary elements, Themes & Symbolism/motifs, Creative Writing tasks, Literary Essays.
Author: Henry H. Halley
Publisher: Zondervan
ISBN: 0310296072
Category : Religion
Languages : en
Pages : 1136
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Book Description
The bestselling Bible handbook of all time with millions of copies sold, the Halley's Bible Handbook makes the Bible's wisdom and message accessible to everyone. The beloved and classic Bible companion has been thoroughly updated, while retaining its time-honored features and Dr. Halley's highly personal style, to offer even greater clarity, insight, and usefulness. Whether you've read the Bible many times or never before, you will find insights that provide a firmer grasp of God's Word and an appreciation for the cultural, religious, and geographic settings in which the story of the Bible unfolds. Written for both mind and heart, this completely revised, updated, and expanded edition features: All-new maps, photographs, and illustrations Contemporary design Practical Bible reading programs Helpful tips for Bible study Fascinating archaeological information Easy-to-understand sections on how we got the Bible and on church history Improved indexes
Author: Khushi Goel
Publisher: Notion Press
ISBN:
Category : Young Adult Fiction
Languages : en
Pages : 136
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Book Description
No time to dawdle + Five mean girls × Mega Mystery = AN EPIC, UNFORGETTABLE ADVENTURE! After Hazel Halley’s rather adventurous summer, she finally goes back to her second home, Starway Academy. Hazel and her gang have fun that year, with the Halloween Ball and Christmas Celebrations, but they all end up to be a mushed-up mess. Something has gone terribly wrong, as disaster by disaster takes place; and it’s up to Hazel to stop it. Something must be done before the world is destroyed. They don’t realise that their world is changing and perhaps, it might be too late to save the day…
Author: Henry H. Halley
Publisher: Zondervan
ISBN: 0310877016
Category : Religion
Languages : en
Pages : 1190
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Book Description
A beloved and classic Bible companion, Halley's Bible Handbook makes the Bible's wisdom and message accessible to everyone. This full color, revised and updated 25th edition is both comprehensive and inviting, including a concise Bible commentary, important discoveries in archaeology, related historical data, church history, historical geography, and more. It is the culmination of Dr. Halley's mission: that every Christian be enabled and encouraged to consistently and devotedly read and understand their Bible. Ninety years after its initial publication, Halley's Bible Handbook remains a bestseller in its various editions, with millions of copies sold worldwide. This world-renowned Bible handbook has been consistently updated and revised to accurately provide even greater clarity, insight, and usefulness. Whether you’ve read the Bible many times or are just starting, you'll find insights that give you a firm grasp of God's Word and an appreciation for the cultural, religious, and geographic settings in which the story of the Bible unfolds. The Deluxe edition features: Full-color maps, photographs, illustrations, tables, and charts on almost every page. Practical Bible reading programs. Helpful tips for deeper Bible study. Updated archaeological information. Easy-to-understand sections on how we got the Bible and on church history. Improved indexes, including a color-coded edge index to easily find your place. A contemporary design.
