The Illustrated Longitude: The True Story of a Lone Genius

The Illustrated Longitude: The True Story of a Lone Genius


The Illustrated Longitude: The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time [Epub] ➟ The Illustrated Longitude: The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time ➠ Dava Sobel – Larringtonlifecoaching.co.uk The Illustrated Longitude recounts in words and images the epic quest to solve the greatest scientific problem of the eighteenth and three prior centuries determining how a captain could pinpoint his The Longitude: The True Story eBook Ä Illustrated Longitude Longitude: The PDF/EPUB ¿ recounts in words and images the epic quest to solve the greatest scientific problem of The Illustrated PDF \ the eighteenth and three prior centuries determining how a captain could pinpoint his ship s location at sea All Illustrated Longitude: The eBook ✓ too often throughout the ages of exploration, voyages ended in disaster when crew and cargo were either lost at sea or destroyed upon the rocks of an unexpected landfall Thousands of lives and the fortunes of nations hung on a resolution to the longitude problemTo encourage a solution, governments established prizes for anyone whose method or device proved successful The largest reward of , truly a king s ransom was offered by Britain s Parliament inThe scientific establishment from Galileo to Sir Isaac Newton had been certain that a celestial answer would be found and invested untold effort in this pursuit By contrast, John Harrison imagined and built the unimaginable a clock that told perfect time at sea, known today as the chronometer Harrison s trials and tribulations during his forty year quest to win the prize are the culmination of this remarkable story The Illustrated Longitude brings a new and important dimension to Dava Sobel s celebrated story It contains the entire original narrative of Longitude, redesigned to accompanyimages chosen by William JH Andrewes from portraits of every important figure in the story to maps and diagrams, scientific instruments, and John Harrison s remarkable sea clocks themselves Andrewes elegant captions and sidebars on scientific and historical events tell their own story of longitude.

    The Illustrated Longitude: The True Story of a Lone Genius sea or destroyed upon the rocks of an unexpected landfall Thousands of lives and the fortunes of nations hung on a resolution to the longitude problemTo encourage a solution, governments established prizes for anyone whose method or device proved successful The largest reward of , truly a king s ransom was offered by Britain s Parliament inThe scientific establishment from Galileo to Sir Isaac Newton had been certain that a celestial answer would be found and invested untold effort in this pursuit By contrast, John Harrison imagined and built the unimaginable a clock that told perfect time at sea, known today as the chronometer Harrison s trials and tribulations during his forty year quest to win the prize are the culmination of this remarkable story The Illustrated Longitude brings a new and important dimension to Dava Sobel s celebrated story It contains the entire original narrative of Longitude, redesigned to accompanyimages chosen by William JH Andrewes from portraits of every important figure in the story to maps and diagrams, scientific instruments, and John Harrison s remarkable sea clocks themselves Andrewes elegant captions and sidebars on scientific and historical events tell their own story of longitude."/>
  • Paperback
  • 224 pages
  • The Illustrated Longitude: The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time
  • Dava Sobel
  • English
  • 25 January 2017
  • 0802775934

About the Author: Dava Sobel

Dava Longitude: The True Story eBook Ä Sobel is Longitude: The PDF/EPUB ¿ an accomplished writer of popular expositions of scientific topics A graduate of the Bronx The Illustrated PDF \ High School of Science, Ms Sobel attended Antioch College and the City College of New York before receiving her Illustrated Longitude: The eBook ✓ bachelor of arts degree from the State University of New York at Binghamton in She holds honorary doctor of letters degrees from the University of Bath, in England, and Middlebury College, Vermont, both awarded in In her four decades as a science journalist she has written for many magazines, including Audubon, Discover, Life and The New Yorker, served as a contributing editor to Harvard Magazine and Omni, and co authored five books, including Is Anyone Out Therewith astronomer Frank Drake Her most well known work is Longitude The asteroid Davasobel is named for her.



10 thoughts on “The Illustrated Longitude: The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time

  1. Peter Peter says:

    I first read Longitude, by Dava Sobel, just after I finished high school, and I devoured it in a sitting or two It was the first non fiction book, I think, that I really couldn t put down The true story is great legendary historical figures like Isaac Newton, Galileo, James Cook, King George III scientific conundrums innovative engineering a ransom of millions at stake and a humble, lone man competing against oppressive and manipulative big wigs.Background Latitude lines are the parall I first read Longitude, by Dava Sobel, just after I finished high school, and I devoured it in a sitting or two It was the first non fiction book, I think, that I really couldn t put down The true story is great legendary historical figures like Isaac Newton, Galileo, James Cook, King George III scientific conundrums innovative engineering a ransom of millions at stake and a humble, lone man competing against oppressive and manipulative big wigs.Background Latitude lines are the parallel lines that circle the globe above and below the equator, and any sailor could figure out his latitude by measuring the length of the day or looking at the angle of the sun or the north star But finding one s longitude, the lines that connected the north and south poles, was muchdifficult Anyone could determine that he was on the tropic of cancer, but determining how far along the tropic of cancer was a different challenge one that, if solved, would revolutionize navigation and save countless lives In 1714, Parliament offered a purse worth 20,000 Pounds millions today to anyone who could solve the longitude problem John Harrison was a quiet, hard working clockmaker who believed he had found the way.Re reading this now, many of the details and events in the story remain as compelling as they were ten years ago Longitude is a tremendous tale of battling scientists and the perseverance of hard work, brilliance, and humility through political intrigue and greed Do I recommend itYes, to anyone interested in history, science, engineering, geography, politics, astronomy, navigation, clockmaking Would I teach itNot in an English class, but I d refer to it as a great example of science writing Lasting ImpressionThis book keeps a wonderful balance between the personal, scientific, and political elements of the story It s history you can escape into

  2. Pramod Nair Pramod Nair says:

    Longitude from Dava Sobel is a fascinating account of how a virtually unknown watchmaker named John Harrison conquered one of the oldest and thorniest problems surrounding the ocean voyages the problem of accurately measuring longitude , which stumped even the best of scientific minds for centuries A fascinating problemIt was Ptolemy in Geographia , written in the 2nd century, who contributed the concept of a co ordinate system based on the imaginary lines of latitude and longitude, for acc Longitude from Dava Sobel is a fascinating account of how a virtually unknown watchmaker named John Harrison conquered one of the oldest and thorniest problems surrounding the ocean voyages the problem of accurately measuring longitude , which stumped even the best of scientific minds for centuries A fascinating problemIt was Ptolemy in Geographia , written in the 2nd century, who contributed the concept of a co ordinate system based on the imaginary lines of latitude and longitude, for accurately plotting any spot on the surface of earth With these imaginary lines he bought a new light in to the maritime explorations and map making methods of his time The sailors while at the ocean found it pretty straightforward to find their current latitude which is drawn parallel to each other while girdling the globeby measuring the height of the sun or any known celestial bodies But accurately measuring their current longitude was an entirely different case, as the longitudinal lines loop from the North Pole to the South Pole and back again in great circles, which converge at the ends of the earth Since it is an angular measurement, which is based on time, the sailors had to have access to two different times the current time on board the vessel and the time at a known and pre selected longitudinal location at the same instance for calculating the hour differences to work out the geographical separation and the longitude From a modern viewpoint with our easy to carry accurate time telling devices and instant communication this problem, which a sailor faced in finding the exact time at two different locations, may feel far fetched But a sailor in the middle of an ocean pre dating 18th century only had limited resources in the form of either a pendulum driven clock which was not at all reliable as the factors like gravity, motion of the vessel, temperature and atmospheric pressure affected the pendulum and there by the time or by comparing positions of moon or planets like Mars with their anticipatory positions in working out the longitudinal values both these methods were crude with a high level of inaccuracy.Since the days of Ptolemy, legendary scientific and exploratory minds like Amarigo Vespucci, Sir Issac Newton and Galileo Galilei did a lot of research into this matter but it took sixteencenturies for mankind to finally invent a reliable solution for this problem.A tragedy the declaration of a prize moneyIn 1707, a British fleet of vessels under Admiral Sir Clowdesley Shovell met with a tragic disaster as the result of miscalculations in their whereabouts leading to the sinking of four warships with a death toll ofthan 1600 mariners This disaster and huge protest from the merchants and seamen resulted in the formation of a parliamentary committee for finding a practical solution for the longitude problem This was followed by the 1714 Longitude Act by the parliament, which promised a prize money of 20,000 for a suitable solution Dava Sobel covers this formation of the committee and the announcement of the reward in detail Sir Issac Newton, who was consulted by the committee, at first suggested the idea of a watch for tackling the longitude problem One method is by a Watch to keep time exactly But, by reason of the motion of the Ship, the Variation of Heat and Cold, Wet and Dry, and the Difference of Gravity in different Latitudes, such a watch hath not yet been made But he believed that such a watch with too many technical challenges was not going to be a reality and was alignedtowards finding a solution for the longitude problem in the realms of astronomy A good watch may serve to keep a reckoning at Sea for some days and to know the time of a celestial Observation and for this end a good Jewel watch may suffice till a better sort of Watch can be found out But when the Longitude at sea is once lost, it cannot be found again by any watch Newton died in 1727, and therefore did not live to see the predecessor of the modern day chronometers become a reality At the same time another less known figure a skilled watchmaker from Lincolnshire named John Harrison who was stimulated by the scientific and the monetary factors surrounding this riddle decided to find a solution of his own Possessed with a brilliant mind he succeeded initially in creating a prototype and then further versions of perfect working models of the world s first marine chronometers thereby revolutionizing the ocean travels His handmade sea clocks which are elaborate pieces of engineering marvels and still in display in working condition at the Royal Observatory, Greenwich, Englandgave the world the first reliable method for measuring the longitude Dava Sobel records the background and each step of this pioneering invention in an easy to read form, by guiding the reader through a tumultuous story of the sheer determination and relentless pursuit for perfection from a self made man and the obstructions, unkempt promises and villainy he had to face from some of his jealous contemporaries This concise and engaging chronicle of an innovative engineering deed covers a lot of details on the history, science and politics, which led to this invention and is a recommended read for anyone who is interested in maritime history and science Since I read an updated fully illustrated edition of Longitude , which was published later, the book was a treasure trove with a large selection of rare photographs including Harrison s sea clocks, documents of declarations, letters, scientific articles, maps and diagrams which added greatly to the value of the volume The illustrated edition is highly recommended

  3. Max Max says:

    On October 22, 1707 four English warships crashed into the rocks of the Scilly Isles southwest of England They quickly sank killing 2,000 men The cause of this catastrophe was the inability to determine longitude, a problem that beset mariners everywhere In 1714 the British Parliament set a 20,000 reward for whoever could solve the problem The Board of Longitude, which would be primarily comprised of astronomers, was set up to award the money To win the full prize, the method or device had On October 22, 1707 four English warships crashed into the rocks of the Scilly Isles southwest of England They quickly sank killing 2,000 men The cause of this catastrophe was the inability to determine longitude, a problem that beset mariners everywhere In 1714 the British Parliament set a 20,000 reward for whoever could solve the problem The Board of Longitude, which would be primarily comprised of astronomers, was set up to award the money To win the full prize, the method or device had to be accurate to within one half degree on a trip from England to the West Indies.There had been many ideas about how to determine longitude, but none worked reliably They fell into two basic camps the astronomical and the clock The idea behind astronomy was to find a pattern of stars, the track of the moon or even the eclipses of the four known moons of Jupiter that would yield longitude The clock idea was based on time difference 15 degrees of longitude equals an hour So a clock that could keep accurate time set to London time could be compared with a clock set to local time The local time could be determined by sighting the sun at noon The time difference would give the degrees of longitude from London But prior to the eighteenth century clocks didn t work reliably in the rough environment of ships at sea, so the London clock would be off In 1727, a self educated village carpenter and clock maker, John Harrison, heard about the prize In 1730 he had plans for a chronometer as mariner s clocks of sufficient accuracy would later be called He showed his plans to Edmund Halley of comet fame, a board member, who sent him to a prominent clockmaker and fellow Royal Society member who encouraged Harrison to build his clock Five years later Harrison presented the clock to the board He had been able to take it on a voyage to Lisbon where it proved its worth Harrison s clock was original, intricate and exquisitely crafted The board was impressed but Harrison himself was not He felt he could do better and took another five years to build a second chronometer The Royal Society tested the second clock and gave it accolades but Harrison again decided he could do even better and took twenty years to build a third.In the thirty years Harrison was building his three clocks astronomers were busily cataloging stars and navigational instruments were vastly improving By 1760 the board was considering a complicated but effective method of calculating a ship s longitude from the positions of the moon and stars And since the board was mostly made up of astronomers, they instinctively preferred an astronomical solution to a simply mechanical one.Harrison was awarded the prestigious Copley Gold Medal in 1749 at the recommendation of the Royal Society for the many innovations he had made in his clocks that made them so accurate and reliable But as usual Harrison himself was the hardest to satisfy Immediately after completing clock three he built a fourth, a pocket watch that ultimately would win the coveted prize On a West Indies trip the pocket chronometer worked perfectly, but the astronomers on the board dawdled about awarding the prize since they were now enad with an astronomical solution Since presenting his first chronometer, Harrison had been receiving stipends so that his work could continue, but the prize was elusive Harrison felt his chief nemesis was Astronomer Royal, Nevil Maskelyne, a strong advocate of the astronomical method Maskelyne took it upon himself to conduct further tests on Harrison s watch Finally in 1765 the board awarded Harrison 10,000, half the prize, and ordered him to make twoof the watches to show it could be duplicated The board also commissioned another clockmaker to build an identical twin of Harrison s watch The twin was selected to accompany Captain Cook on his second voyage around the world The chronometer won high praise from Cook who used it to make accurate maps Finally through the intervention of King George III, Harrison received a final 8,750 in 1773.One of the biggest problems with Harrison s chronometer was the cost, at least 400 to duplicate when a sextant and tables cost 20 But fifteen years later the price would drop to 80 and would keep declining By 1815 over 5,000 chronometers were in service The problem of longitude had been solved Sobel s short history reads quickly The book contains nice photographs of Harrison s clocks showing their complex inner workings The chronometers have been restored and now reside in British museums Sobel explains some of the principles of clock mechanisms and details some of Harrison s innovations She also covers failed as well as successful astronomical approaches to finding longitude But this is also a human interest story of an odd difficult man, a homespun insular genius, who faces the complex scientific society of eighteenth century England Recommended for the science buff and general reader alike

  4. Philip Allan Philip Allan says:

    Longitude is a remarkable achievement The recipe for sales success in international book sales rarely contains such unpromising ingredients as these an obsessive carpenter s son from Yorkshire, an intractable navigational problem and a lot of clocks Yet Longitude succeeds in weaving a narrative full of clashing of ideas, intriguing personalities, bizarre anecdotes and at its heart a tale of the little guy challenging the Establishment.The story is one that has long been familiar to both nava Longitude is a remarkable achievement The recipe for sales success in international book sales rarely contains such unpromising ingredients as these an obsessive carpenter s son from Yorkshire, an intractable navigational problem and a lot of clocks Yet Longitude succeeds in weaving a narrative full of clashing of ideas, intriguing personalities, bizarre anecdotes and at its heart a tale of the little guy challenging the Establishment.The story is one that has long been familiar to both naval historians and lovers of clocks, two introspective groups who had failed to bring it to a wider public Enter Dava Sorbel , with a journalist s nose for a good story, and the flare to tell it well This is a page turner that makes what could be a mire of mechanical and mathematical detail simple, easy to follow and enjoy by anyone, whether they are confirmed landlubbers or have a previous interest in the sea.From a purest point of view the book does have its faults Sorbel s understandable desire to tease a cracking yarn from the history leads her to be partial in choosing her facts She is unfairly hard on the Halley Maskylene method of calculating longitude, for example, which worked too, and had the big advantage of only requiring equipment that already exist onboard ships a good compass, a sextant and a trained navigator It is small wonder that an unproven machine, full of cogs and springs was viewed with suspicion It is also only with hindsight that it is clear the marine chronometers was the right solution The copy of H4 that Cook used on his second voyage cost 450 and took a skilled watch maker several years to make To give an indication of cost, building a frigate at the time cost about 14K Given each ship would need several chronometers to check against each other , at the time of Harrison s death, it was still not a practical solution for most vessels It was those that came after Harrison, especially Thomas Earnshaw, who perfected and then mass produced reliable chronometers.But that is the grumpy naval historian part of me speaking The author of popular naval fiction part can only applaud a wonderful book

  5. Claudia Claudia says:

    Really lovely and very interesting reading Everybody knows about longitude but I guess not so many know the struggles and fights behind the tries to conquer it, including myself.John Harrison was a genius of his times beside the fact that he produced the first accurate marine watches for calculating longitude, his pieces are works of art H1 H3 And the masterpiece, H4, completed in 1759 Really lovely and very interesting reading Everybody knows about longitude but I guess not so many know the struggles and fights behind the tries to conquer it, including myself.John Harrison was a genius of his times beside the fact that he produced the first accurate marine watches for calculating longitude, his pieces are works of art H1 H3 And the masterpiece, H4, completed in 1759 The book is written on everyone s understanding, full of new historical facts for me It was a pleasure and it takes just a few hours to get it done totally worthy of your time

  6. Joy D Joy D says:

    Non fiction about the quest to develop a reliable method for measuring longitude The first several chapters describe the difficulties encountered by ships attempting to navigate solely based on latitude The focus then shifts to a biography of John Harrison, the 18th century clockmaker who attempted to solve this problem based on timekeeping It also describes his primary competitor and adversary, Nevil Maskelyne, who was keen on proving that the best approach involved astronomical readings Th Non fiction about the quest to develop a reliable method for measuring longitude The first several chapters describe the difficulties encountered by ships attempting to navigate solely based on latitude The focus then shifts to a biography of John Harrison, the 18th century clockmaker who attempted to solve this problem based on timekeeping It also describes his primary competitor and adversary, Nevil Maskelyne, who was keen on proving that the best approach involved astronomical readings They and many others vied for the monetary prize offered by the British government Along the way, the author highlights some of theoutlandish ideas, one of which involves barking dogs The book is farthan a scientific analysis of the problem of finding longitude It portrays the intrigue, rivalries, conflicts, and accidental discoveries that make this book a fascinating reading experience It is a story of the triumph of a perfectionistic genius of humble origins over the well educated experts of the day Recommended to those who, like me, enjoy stories related to travel by sea, voyages of exploration and discovery, and maritime adventures in days of yore

  7. Mahlon Mahlon says:

    In Longitude, Dava Sobel chronicles the world s quest to tame time In 1714, the English Parliament passed the longitude act It established the Board of Longitude and offered a prize of 20,000 pounds to anyone who could find a simple and practical method for the precise determination of a ship s longitude In particular Sobel highlights John Harrison s pursuit of the prize She traces the arc of his career, and details the innovations of each of his subsequent entries H1 H5 Unfortunately, eve In Longitude, Dava Sobel chronicles the world s quest to tame time In 1714, the English Parliament passed the longitude act It established the Board of Longitude and offered a prize of 20,000 pounds to anyone who could find a simple and practical method for the precise determination of a ship s longitude In particular Sobel highlights John Harrison s pursuit of the prize She traces the arc of his career, and details the innovations of each of his subsequent entries H1 H5 Unfortunately, even though his Chronometers repeatedly proved their worth in Sea trial after sea trial, and the watch quickly gained adherents among sea captains, Harrison was thwarted at every turn in his attempt to claim the prize Jealous rivals on the board used their influence to change the rules of the contest multiple times His relations with the board became so acrimonious that eventually his friends went over the board s head and appealed directly to the King himself George III asked that a special act of Parliament be passed and Harrison finally received his prize.Despite it s brevity, Longitude is an incredibly engaging and educational book Sobel writes in a way that makes the science and math accessible to the general reader.If you re interested in this subject I d also recommend the 2000 AE movie, which was based on this book

  8. William T. William T. says:

    This review has been hidden because it contains spoilers To view it, click here This book was intended for the general reader Consequently it did not deal much with the details either of the astronomical or mechanical approaches to solving the problem of finding longitude on the high seas Instead it focused on description of John Harrison s quest to build an ocean chronometer The author treats the difficulties Harrison encountered convincing the Board of Longitude of the efficacy of his devices as a matter of petty politics and egotism without offering the reader suffici This book was intended for the general reader Consequently it did not deal much with the details either of the astronomical or mechanical approaches to solving the problem of finding longitude on the high seas Instead it focused on description of John Harrison s quest to build an ocean chronometer The author treats the difficulties Harrison encountered convincing the Board of Longitude of the efficacy of his devices as a matter of petty politics and egotism without offering the reader sufficient detail about the technical disputes to make any judgments about the scientific debate at the center of the controversy.This book was a bit of a disappointment considering the glowing reviews it received

  9. John John says:

    An amazing book following the attempts to solve the longitudinal navigation problems The author s research covered several hundred years of partial success and many failures Especially interesting was the English contest for solving the problem An amazing man, John Harrison, worked tirelessly to conquer the problem The trials of Harrison, and the jealously of others in his attempts made for a good story. This genius is credited with producing the first marine machine to accurately calculate An amazing book following the attempts to solve the longitudinal navigation problems The author s research covered several hundred years of partial success and many failures Especially interesting was the English contest for solving the problem An amazing man, John Harrison, worked tirelessly to conquer the problem The trials of Harrison, and the jealously of others in his attempts made for a good story. This genius is credited with producing the first marine machine to accurately calculate longitude Then he reduced his machine to a marine watch He made numerous chronometers and many of them may be seen in the Royal Observatory and other places in England.Well written and documented with bibliography

  10. Clif Hostetler Clif Hostetler says:

    I was reminded of this book today because in was on the PageADay Book Lover s Calendar for 3 31 2015 I read it back in the year 2000 I have favorable recollections of the book, and I found it to be in interesting story The following short review is copied from the calendar.Anyone with an interest in history or things maritime should consider Longitude, said USA Today of this bestseller Sobel describes 18th century clockmaker John Harrison s struggle to invent an accurate chronometer, wh I was reminded of this book today because in was on the PageADay Book Lover s Calendar for 3 31 2015 I read it back in the year 2000 I have favorable recollections of the book, and I found it to be in interesting story The following short review is copied from the calendar.Anyone with an interest in history or things maritime should consider Longitude, said USA Today of this bestseller Sobel describes 18th century clockmaker John Harrison s struggle to invent an accurate chronometer, which measured time, necessary to calculate longitude while at sea Requiring decades of painstaking research, Harrison finally accomplished his goal, but then faded into the mists of time until his reputation was revived by Sobel s book, which is full of little known facts about science, ships, and England in the 1700sLONGITUDE, THE TRUE STORY OF A LONE GENIUS WHO SOLVED THE GREATEST SCIENTIFIC PROBLEM OF HIS TIME,by Dava Sobel 1995 Walker Company, 2007 The link below is to an excerpt from the book

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