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24K GOLD PLATED HARRISON UNIQUE GRASSHOPPER ESCAPEMENT MARBLE BASE SEA CLOCK
 
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A fantastic grasshopper sea clock. It has an unique fusee movement. The clock is sitting on a black marble base with a protective glass dome. The clock has a famous grasshopper escapement. The double batons pendulums swing back and forth on each side of the clock each second, and it shows on a porcelain dial ring. The complete height of this clock is 17-1/4", 13-1/4" wide and 9-1/16" deep. The time shows on a 4" porcelain dial ring with a set of Roman numerals. There is a lot of motion on this clock and it certainly makes it standing out from the rest. The clock body is gold plated.
Views: 19774 zero distance
John Harrison's "H3" clock in action
 
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John Harrison's "H3" was his third attempt at a clock that could survive sea-travel without losing time. This was in response to the "Longitude Rewards" (a challenge to develop a reliable system for determining Longitude while at sea). It was not accurate enough, so a another clock was attempted. This is the original "H3" clock, which is now in the care of the Royal Observatory Greenwich. John Harrison (https://en.wikipedia.org/wiki/John_Harrison) Longitude Rewards (https://en.wikipedia.org/wiki/Longitude_rewards)
Views: 5377 Matuga Spudd
Раскошные кабинетные часы Sinclair Harding Sea Clocks John Harrison
 
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Sinclair Harding Sea Clocks John Harrison http://www.678.ru/i_shop/sinclair-harding/sea-clocks/john-harrison-sea-clocks/ Легендарная английская часовая мануфактура Sinclair Harding вдохновлённая революционными изобретениями знаменитого часовщика Джона Харрисона представила часы Sea Clocks в которых воплотила самые интересные из его разработок. Джон Харрисон был часовщиком самоучкой и прославился тем что изобрел новый способ расчета долготы что существенно обезопасило и упростило жизнь капитанам кораблей того времени. Даже знаменитый мореплаватель и первооткрыватель Джеймс Кук использовал часы Джона Харрисона и в последствие оставил в своих журналах хвалебные отзывы о его часах. Компания Синклер Хардинг в своих Морских часах воплотила три самых знаменитых изобретения Джона Харрисона. Одним из самых известных изобретений является спуск «Кузнечик». Почти беззвучное движение этого механизма не требует совсем смазки, а значит со временем не будет проблем как у большинства часов с заменой старой вязкой смазки. На верхнем лунном циферблате часов, который к слову расписан вручную и пронумерован показано еще одно изобретение которое является альтернативным расчетом определения долготы. Ref. John Harrison Sea Clocks Механизм С ручным заводом Функции Минуты / Секунды / Часы / Фаза луны Размер корпуса 45 x 32 x 21 мм Запас хода 8 дней Особенности Астрономические часы / Настольные часы "watch club" Жуковка д.58 ⌚Швейцарские часы.⌚ Комиссионная продажа. TRADE-IN. ⏰🔛⌚ 💶СРОЧНЫЙ ВЫКУП.💵 Часы на заказ. 📳+7(925)6423805 whats app. ☎+7(495)008-28-88 678.ru
Views: 392 Watch Club
John Harrison's "H1" clock in action
 
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John Harrison's "H1" was his first attempt at a clock that could survive sea-travel without losing time. This was in response to the "Longitude Rewards" (a challenge to develop a reliable system for determining Longitude while at sea). It was not accurate enough, so a another clock was attempted. This is the original "H1" clock, which is now in the care of the Royal Observatory Greenwich. John Harrison (https://en.wikipedia.org/wiki/John_Harrison) Longitude Rewards (https://en.wikipedia.org/wiki/Longitude_rewards)
Views: 6318 Matuga Spudd
1736 Harrison First Timekeeper most accurate sea clock Innovation no pendulum
 
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1736 Harrison First Timekeeper most accurate sea clock Innovation no pendulum Royal Observatory Greenwich UK TilTul http://tiltul.com LinksYouWantToRemember CIMG0130 1736 Harrison First Timekeeper most accurate sea clock Innovation no pendulum
Views: 34 TilTuli
Longitude - TV movie 2000
 
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In the 18th century, the only way to navigate accurately at sea was to follow a coastline all the way, which would not get you from Europe to the West Indies or the Americas. Observing the sun or stars would give you the latitude, but not the longitude unless done in conjunction with a clock that would keep time accurately at sea, and no such clock existed. After one too many maritime disasters due to navigational errors, the British Parliament set up a substantial prize for a way to find the longitude at sea. The film's main story is that of craftsman John Harrison: he built a clock that would do the job, what we would now call a marine chronometer. But the Board of Longitude was biased against this approach and claiming the prize was no simple matter. Told in parallel is the 20th century story of Rupert Gould, for whom the restoration of Harrison's clocks to working order became first a hobby, then an obsession that threatened to wreck his life.
Amazingly accurate clock finally recognised after 300 years - Guinness World Records
 
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A pendulum clock based on an 18th century theory dismissed at the time, has been recognised by Guinness World Records for its accuracy. Subscribe for more: http://bit.ly/subscribetoGWR Proving perhaps to have been too visionary for its times, “Clock B” has been awarded with a world record for most accurate mechanical clock with a pendulum swinging in free air, vindicating the vision of its original designer John Harrison Work on Clock B was started in 1975 by Martin Burgess, based on a design by 18th Century clockmaker Harrison, who is also famously renowned as the finder of longitude at sea. Welcome to the official Guinness World Records YouTube channel! If you're looking for videos featuring the world's tallest, shortest, fastest, longest, oldest and most incredible things on the planet, you're in the right place. LIKE us on Facebook: http://www.facebook.com/GuinnessWorldRecords FOLLOW us on Twitter: http://twitter.com/gwr Find out more: http://www.guinnessworldrecords.com/ Add us to your G+ circles: http://www.google.com/+guinnessworldrecords #GWR #GuinnessWorldRecords
Views: 70187 Guinness World Records
1737 Harrison Second Timekeeper most accurate sea clock Innovation no pendulum
 
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1737 Harrison Second Timekeeper most accurate sea clock Innovation no pendulum Royal Observatory Greenwich UK TilTul http://tiltul.com LinksYouWantToRemember CIMG0131 1737 Harrison Second Timekeeper most accurate sea clock Innovation no pendulum
Views: 23 TilTuli
John Harrison's "H2" clock in action
 
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John Harrison's "H2" was his second attempt at a clock that could survive sea-travel without losing time. This was in response to the "Longitude Rewards" (a challenge to develop a reliable system for determining Longitude while at sea). It was not accurate enough, so a another clock was attempted. This is the original "H2" clock, which is now in the care of the Royal Observatory Greenwich. John Harrison (https://en.wikipedia.org/wiki/John_Harrison) Longitude Rewards (https://en.wikipedia.org/wiki/Longitude_rewards)
Views: 1166 Matuga Spudd
A Detailed Study of H4 - John Harrison's Longitude Timekeeper Reconstruction
 
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Buy DVD at http://www.bdvideos.co.uk/site/shop/horology/a-detailed-study-of-h4/ A reconstruction of John Harrison's successful Longitude timekeeper H4. Derek Pratt, one of the 20th century’s most talented watchmakers, had always been a fan of John Harrison and was determined that a re-creation of his most successful timekeeper H4 should be constructed. Derek started work in 1997, using other talented craftsman for the case, dial and engraving. Then in 2009, due to ill health, when approximately half of the watch had been completed, Charles Frodsham & Co took on the project which was finished in 2014. Displayed worldwide at the Ships, Clocks and Stars: The Quest for Longitude exhibitions at the National Maritime Museum, America and Australia. This is the story of that remarkable achievement.
Views: 35299 Barbara Darby
Standard Sea Clock - 'HIS' on display in the window of Wempe NY Fifth Avenue
 
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The Standard Sea clock was the first of the Sea clocks made by Sinclair Harding. The original design was conceived by Richard Good and styled by Mike Harding in the 1980's. In 1999 several modifications were made to the movement as part of Sinclair Harding's continuous bid to improve on every clock made. The main modification was the addition of a Chain driven Fusee, another of Harrison's inventions, which subsequently made improvements in the clocks timekeeping abilities -- important for a clock "Inspired by John Harrison". http://wempe3.reachlocal.net/bereich-usa.htm http://www.clockmakers.com/john_harrison_sea_clocks/standard_seaclocks.htm
Views: 2537 Michael Birken
Harrison H1 clock
 
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Replica of John Harrison marine chronometer clock to help calculate Longitude.. a long-sought after device for solving the problem of establishing the East-West position or longitude of a ship at sea, thus revolutionising and extending the possibility of safe long-distance sea travel in the Age of Sail.
Views: 16630 speleo2201
The Clock That Changed the World (BBC History of the World)
 
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Of international scientific importance, the Harrison Clock is only one of only three precision pendulum clocks made by John Harrison and instrumental in solving the Longitude problem. The clock was made in 1727 with an amazing fully working wooden mechanism. Plans are in place to display it as part of an interpretive display at Leeds City Museum. With thanks to the BBC
Views: 247565 leedsmuseums
Harrison Birtwistle- Harrison's Clocks (Score)
 
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These pieces were inspired by the Sobel book Longitude, about the painfully prolonged gestation of John Harrison's sea clocks, now preserved at Greenwich; and the link with Harrison Birtwistle's shared name. There are five substantial pieces, each starting with a rush of notes down to the bottom of the keyboard. In Clock I irregular contrary motion and staccato figures are deliberately out of phase. Next a mechanical fantasy with an alarm bell. Clock III variously combines six figures in pairs. Clock IV introduces each of its four sections by repeating the opening signal of the whole work. The last is a toccata with reversed delays between the hands, ending, as each piece does, 'because the clock-spring has broken down', as explained in Stephen Pruslin's helpful notes. Pf: I-IV: Nicolas Hodges V- Joanna MacGregor
Views: 684 Utsyo Chakraborty
HARRISON'S CLOCKS - GREENWICH, UK
 
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John Harrison (1693 - 1776) was a carpenter turned watchmaker, who invented a reliable chronometer which enabled accurate navigation around the globe by such sailors as Captain James Cook.
Views: 3166 GORDONLAWRENCEVIDEOS
The Moonphase Sea Clock
 
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glass-hopper escapement
Views: 851 ayandty
Harrison's Clocks
 
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John Harrison loved making clocks. He did it so well that his clocks were used to solve one of the biggest headaches in navigation -- the Longitude Problem. I first learned about Harrison from Dava Sobel's excellent book, Longitude. Because Harrison's values are my values, I named my business after him. Here's a little more about the story.
Views: 1756 Harrison Metal
Harrison Third Timekeeper 19 years of work most accurate sea clock
 
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Harrison Third Timekeeper 19 years of work was the most accurate sea clock Innovation no pendulum Royal Observatory Greenwich UK TilTul http://tiltul.com LinksYouWantToRemember CIMG0132 Harrison Third Timekeeper most accurate sea clock Innovation no pendulum
Views: 15 TilTuli
A Sea Clock
 
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This clock is very loosely based on John Harrison's H1. So loosely in fact that it only retains the interlinked penulums (his were balances actually), and the grasshopper escapement. It is weight driven with a two minute electrical rewind. It has however the feel of his sea clock and so I decided to mount it on a rocking ship. The interlinked pendulums are largely independent of orientation and it keeps remarkably good time, at present about 30 seconds a day. For further details please see www.woodenclockspot.blogspot.co.uk
Views: 1816 MrParamount3
HARRISON CLOCK H1
 
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Views: 239 hendjim
Harrison Clock - H1
 
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This is the original H1 clock made by John Harrison. Currently being renovated in the workshops at the Royal Observatory, Greenwich, London.
Views: 24052 Marlene Halliday
John Harrison's H2 Clock  1737
 
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Kept at the Royal Meteorological Observatory in Greenwich, UK. An improved version of the H1. It also still works!
Views: 997 Yak18pilot
Harrison precision-pendulum clock no. 2
 
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Matthew Read, Clocks Programme Tutor at West Dean College, getting the Harrison precision-pendulum clock no. 2 working during a visit to Leeds Museum Discovery Centre in October 2010. Filmed by Ian Fraser, Conservator, for Leeds Museums & Galleries
Views: 1392 leedsmuseums
Clock 1
 
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Clock base on a Harrison movement designed by Stuart Pratt
Views: 14986 Ilana Fox
The Quest for Longitude: Ships, Clocks & Stars at Mystic Seaport
 
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For centuries, sailors ventured out with little knowledge of where they were or which direction they were heading. Mystic Seaport’s new exhibit “Ships, Clocks & Stars: The Quest For Longitude” tells the story of an unlikely hero – a clockmaker, and a timepiece so precise it changed seafaring navigation forever. Mystic Seaport is the nation's leading maritime museum. Founded in 1929, the museum is home to four National Historic Landmark vessels, including the Charles W. Morgan, American's oldest commercial ship and the last wooden whaleship in the world. Mystic Seaport ranges across 17-acres on the Mystic Peninsula with 50 buildings and hands-on attractions, including, sailing classes, a million seafaring artifacts and historical photographs, Sabino, the oldest coal-powered steamboat in America, and a 250 year tradition of celebrating all things of the sea. From whaling history to wood carving and cooperage, Mystic Seaport is the place for those who love the sea and maritime history. Mystic Seaport is located one mile south of exit 90 off I-95 in Mystic, CT. Admission is $24 for adults and $15 for children ages 6-17. Museum members and children under 6 are admitted free. For more information visit www.mysticseaport.org View special offer for Mystic Seaport: http://bit.ly/1m3ZjBM
Views: 49997 Mystic Seaport
Should we stop the Harrison clock?
 
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The longcase clock at Nostell made by John Harrison has been keeping time steadily for 300 years. But now sometimes it stops. Should we replace worn parts or simply stop it to preserve its original state? Hear what Jonathan Betts (National Trust Advisor on Clocks and Watches) thinks and visit The Clock Stops exhibition at Nostell (25 March - 29 October 2017) to have your say.
Dent Clock with Grasshopper Escapement
 
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Dent Harrison with Grasshopper escapement
Views: 1593 ticktocktony
Ships, Clocks & Stars: Assembling the H3 replica
 
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How many people does it take to assemble a clock? For the replica of John Harrison’s H3, currently on display as part of Ships, Clocks & Stars: the Quest for Longitude, the answer is two master clockmakers. David Higgon and Sean Martin, from Charles Frodsham & Co, London, spent four days reassembling a thousand pieces to create the working model. 'Ships, Clocks & Stars: The Quest for Longitude' runs until 30 October 2016 at the AUSTRALIAN NATIONAL MARITIME MUSEUM, DARLING HARBOUR SYDNEY. BOOK TICKETS NOW AT http://www.anmm.gov.au/longitude KIDS & MEMBERS FREE (Kids FREE with paying adult. Excludes school and group bookings.) Video by Lights Camera Business video production, Sydney https://www.lightscamerabusiness.com.au/
John Harrison's \ | Hot
 
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John Harrison's "H1" was his first attempt at a clock that could survive sea-travel without losing time. This was in response to the "Longitude Rewards" (a challenge to develop a reliable system for determining Longitude while at sea). It was not accurate enough, so a another clock was attempted. This is the original "H1" clock, which is now in the care of the Royal Observatory Greenwich. John Harrison (https://en.wikipedia.org/wiki/John_Harrison) Longitude Rewards (https://en.wikipedia.org/wiki/Longitude_rewards)
Views: 20 Germany News
H1 Sea Clock for iPhone & iPod Touch
 
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H1 was John Harrison's first attempt to solve the Longitude problem for navigation at sea. It was completed in 1736. The top dial is Seconds, 1 revolution is 2 minutes. Left dial is minutes, 1 revolution is 2 hours. Right Dial is hours, 1 revolution is 24 hours. Bottom calendar dial represents 31 days for 1 revolution on this simulation. For the top three dials, the numbers increase from top to bottom on the right side of the dials and from bottom to top on the left side so you can read either end of the hands. (Sorry, the youtube video is kinda jerky) This is an earlier version of the app. Images of H1 © National Maritime Museum, Greenwich, London by kind permission of the Ministry of Defence Art Collection, London, used under license. http://www.iTalentProductions.com
Views: 3910 Gary Mayhak
One of Harrison's Clocks at the Greenwich Observatory
 
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John Harrison created ingenious clocks to solve the problem of navigators finding their longitude at sea.
Views: 87 Joshua Colwell
Birtwistle's Clocks
 
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Views: 7265 Jeroen de Boer
The Longitude Problem
 
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The discovery of a way to measure longitude revolutionised long-distance sea travel forever, but the institution which made it happen has all but disappeared from memory. Now researchers led by Professor Simon Schaffer are launching a new project to remember the Board of Longitude and tell its remarkable story in full for the first time.
Views: 20219 Cambridge University
HARRISON CLOCK H3
 
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Greenwich Observatory
Views: 474 hendjim
John Harrison H1 - Greenwich Observatory
 
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Harrisons first Marine Chronometer/ Sea Clock.
Views: 214 wryyyy
John Harrison's H1 Clock  1735
 
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Kept at the Royal Meteorological Observatory in Greenwich, UK. It still works! The first timepiece able to keep accurate time on a ship.
Views: 2637 Yak18pilot
Twin Pivot Grasshopper Escapement - invented by John Harrison
 
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Four minute escape wheel No sliding friction, no wear, no lubrication Entry angle = 90 degrees Exit angle = 89.73 degrees Thank you, David Heskin. More information refer to: www.hsn161.com
Views: 33604 Ken Kuo
The Harrison Clock H1 replica by Norman Banham of Canberra
 
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Canberra John Harrison "Norm Banham" watchmaker craftsman Heritage Horologist Australia ACT
Views: 2334 speleo2201
HARRISON CLOCK H2
 
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Greenwich Observatory
Views: 208 hendjim
Meccano Navigation Clock
 
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This sea clock was inspired by John Harrison, who won the Board of Longitude Prize in the 18th century for a clock that could accurately tell the time at sea and hence establish as ship's longitude. The original clock took six years to build and was completed in 1735. This Meccano replica, designed by Michael Adler, features the linked balance arms and the 'grasshopper' escapement.
Views: 21989 sepuraman
What IS Longitude? | Earth Lab
 
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John Harrison goes in depth on how we measure longitude. Subscribe to Earth Lab for more fascinating science videos - http://bit.ly/SubscribeToEarthLab All the best Earth Lab videos http://bit.ly/EarthLabOriginals Best of BBC Earth videos http://bit.ly/TheBestOfBBCEarthVideos Professor Brian Cox is going in search of the best of British science. Introducing his science heroes, Brian visits the places where they made their discoveries, recreating their experiments and examining their legacy to their scientific descendants. Here at BBC Earth Lab we answer all your curious questions about science in the world around you. If there’s a question you have that we haven’t yet answered or an experiment you’d like us to try let us know in the comments on any of our videos and it could be answered by one of our Earth Lab experts. Want to share your views with the team behind BBC Earth and win prizes? Join our fan panel here: http://tinyurl.com/YouTube-BBCEarth-FanPanel This is a channel from BBC Studios who help fund new BBC programmes. Service information and feedback: https://www.bbcworldwide.com/ContactWizard
Views: 25159 BBC Earth Lab
John Harrison's \ | Hot
 
00:11
John Harrison's "H3" was his third attempt at a clock that could survive sea-travel without losing time. This was in response to the "Longitude Rewards" (a challenge to develop a reliable system for determining Longitude while at sea). It was not accurate enough, so a another clock was attempted. This is the original "H3" clock, which is now in the care of the Royal Observatory Greenwich. John Harrison (https://en.wikipedia.org/wiki/John_Harrison) Longitude Rewards (https://en.wikipedia.org/wiki/Longitude_rewards)
Views: 63 Germany News
John Harrison's First Land Clock
 
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video for ASTR 324 #1
Views: 341 jillandcaitlin
John Harrison
 
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Views: 125 ClockmakerJeff
Grasshopper Sea Clock Re-build
 
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Clock was re-built using a "Constant torque" spring and precision pallet hubs. Instrument ball bearings throughout. Fusee is linear, not parabolic and includes a "Maintaining power" device so the clock can be wound while it is running. Drive torque is now stable to +/- 1% over 7-3/4 days. Pendulum rods re-made with Invar. Metal finishing flaws were rectified... Clock rate is being measured with a Mumford MicroSystems MicroSet 3 diagnostic timer; the optical sensor is on the aluminum base on the left. Direct questions to "[email protected]" The self-appointed Harrison Horology Police need not comment further....
Views: 2468 phoenixman1961
John Harrison Clocks for Longitude from June 1998 in Greenwich, London, UK
 
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Read more about these clocks at http://en.wikipedia.org/wiki/John_Harrison and in the book Longitude by Dava Sobel.
Views: 5311 franticvid
CounterBalance Theater’s “Longitude”
 
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CounterBalance Theater’s “Longitude” is a devised theater production based on Dava Sobel’s best-selling book about lost ships at sea in the 1700’s, and the international competition to establish “Longitude”—- the critical missing-link of marine navigation. Hayley’s comet, Royal Astronomer Nevil, King George 3rd and a humble clock maker named John Harrison all enter into the most famous race of the 18th century. Physical depictions of clocks, maps and nature personified (including storms at sea, and the celestial heavens) are embodied by the performers who play multiple speaking characters and all of the movement roles.
Views: 101 UCI Media
John Harrison's "H3" Timepiece
 
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Next development, still had flaws.
Views: 4208 TheOxVideo

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