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The final results, points out the two kinds of sport watches for men longitude method: a mechanical method, application of clocks and watches; another is to use astronomical method, application of astronomical instruments.
The mechanical method of determining longitude by watches and clocks, Spanish Santo Cruise ( finishing schedule constitute came forth author ) in the year 1510 is pointed out. In 1530, Graham SA, ephod cynegius ( based on advanced digital watches for men author with me 3 it came forth author ) in the Belgian Antwerp published" astronomy and the universe origin theory" in one book to repeat his thought. First determine geographical longitude, the skin is Ye Er Krueger ( II advanced came forth from advanced ) in the 1615 AD by the clock.
But this method can’t determine longitude at sea, that further application cheap citizen watches , because a rich Leo balance and pivot type escapement clocks, can not achieve the required accuracy for determining longitude. Was in the use of pendulum and wheel clocks, application hairspring as governor instead of rich Leo balance, also failed to put the clock travel-time accuracy improved to the level of need, the reason is still retained the old pivot type escapement.
Application of the balance wheel in a clock citizen automatic watches and a hairspring system, or with a natural period of vibration speed governor has great significance, in the precision always opens a new era in the history of. From then on, in classical mechanics, physics and precision of time established a close contact. We know, Huygens’s work: according to the design theory of mechanical pendulum clock to the new branch, namely just system system dynamics. In order to apply the hairspring balance wheel watches the governor, Luo don’t Stuart Hooke according to a hairspring experimental work results, the establishment of material strength and balance spring vibration isochronism.
In the second half of the seventeenth Century, Huygens omega speedmaster professional , repair and other people in the use of clocks and watches the balance wheel to determine longitude without success, therefore, application of astronomical method of thought in the astronomers use common, especially the distance method, measuring the distance between the moon and the stars, began to use the more common. Early in the 1514, German Nuremberg de Nie Er, in comments Ptolemy" geography" is discussed the adaptability of moon distance method. In the year eighteenth Century, this method is the Royal Observatory Greenwich and astronomer the center of attention. In the invention of precision timer before, generally think that this kind of method than with clocks to determine longitude.

Precision timer history
The end of fifteenth Century to the first half of the sixteenth Century, with the geographical great discovery, began more large-scale colonial wars, colonial sport watches for men and ocean sailing times.
Sailing from the closed Mediterranean moved to open in the Atlantic digital watches for men , ensure the voyage safety, has become the extremely urgent important issue, but not precise determination of the latitude and longitude of – in the vast ocean ship position basic coordinates, you cannot solve. Still before the year sixteenth Century, according to the sun in a level, will be able to satisfactorily identify local latitude; but, in the seventeenth Century and even eighteenth Century, although all and colonial trade and maritime related to European countries have insisted on trying to solve this problem, but still can not determine longitude to the required precision.
In order to promote this aspect of the invention and successfully solve the problem of the determination of longitude cheap citizen watches, Portugal and Spain in the sixteenth Century, Holland in seventeenth Century, the British and French in eighteenth Century, announced a huge reward.
In 1714, the British Parliament approved the law citizen automatic watches , according to the accuracy of determining longitude, prize money is divided into 1, 1.5, 2 Wan Ying pound. The highest reward is required, in sailing to Western India ocean and return time, determining longitude error in 1 / 20, or 30. In order to solve similar problems a huge reward, who never had before. According to the acceptance of law and research recommendations, established a longitude Bureau, which work on the outstanding scholars: Newtonian, SA Mouila Turk ( schedule constitute came forth it K ), Wirth EC ( me finishing finishing author ).
In the British government group and the Royal association group omega speedmaster professional , to determine longitude deep and growing interest, for successful resolution of determining longitude and the establishment of the huge reward, strongly encouraging invention and scientific thinking progress.

But the sea is so that Athens table nautical bell carry forward place, Ulysse Nardin is due to its clock process on the special technology has gained great popularity.
In 2005, Athens table for navigational watch family to join the new member digital watches for men , Maxi Chronograph chronograph, again ignited Athens table edge since the 1846 sailing legend, continuation of Athens marine chronometer high precision quality, this only 41 mm diameter Maxi chronograph, its high-quality exciting. To multi-level blue dial center such as sea surface with ripples of concentric plan, elaborate three-dimensional ocean atmosphere cheap citizen watches . In the time scale is different from that in the past the same series of watches, twelve o’clock and six o’clock position to increase Rome digital time, mix to rod standard, design is concise and lively, peach and minute hand clockwise diamond, the nine o’clock position 45 product abacus, the three o’clock position 60 seconds small second auxiliary wheel, retro styling central in the second hand.
UN-35 with automatic mixing machine. Chronograph performance citizen automatic watches , light according to the list of side two by the, code table can be quickly return to zero. Lock and lock teeth by tooth crown, waterproof 200 meters, coins embossed table circle, each table side Jun engraved independent serial number, 18K rose gold or stainless steel material, folding buckle, with chain belt, belt and the rubber band style.
In the top of complex mechanical table in the field table, Athens has play a decisive role position, has always been to creativity to consider themselves again in 2004 Athens table, with its watchmaking technology and creative humor, published this Circus" circus" ask table, this table in addition to play again asked Athens table hand-carved action figures of the superb artistry at the same time, with a three time performance will ask table omega speedmaster professional.
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inert metal four adjusting screws, avoid the wheel in the 28800 speed, due to stable airflow produced negative effect, affect the accuracy. UN-160 homemade movement in structure manufacturing cheap citizen watches has the great leap forward, with 50 hours of power storage, power supply composed entirely of single box spring, clockwork spring box pendulum is ceramic ball bearing is fixed, without it, there is nothing comparable to this degree of movement skills.
UN-160 DIY movement is Athens table movement and development history of the most important? Milestone, but this 160 anniversary commemorative watch is Athens table model mark, is the perfect combination of performance and innovation citizen automatic watches . Blue as the ocean like surface, representing Athens table and ocean deep inseparable relationship, in order to make the marine chronometer started and has more than 50 States Navy designation using sea timer Athens table, complete the navigation spirit of the design concept in concentrating on the anniversary watch. The Athens LOGO nameplate, texture increases dramatically, but also in the dial is marked on the calendar year after the brand, Gai automatic plate inscribed with 160 more words, strengthen Memorial significance. 18K platinum and 18K gold two kinds of material selection, the 500 global limited distribution omega speedmaster professional .
Mention Athens table Ulysse Nardin will be thinking of sport watches for men and maritime hegemony period correlation. Begin from seventeenth Century, national military a hotly contested spot is by sea started. Although the birthplace of Neuch" Tel in a surrounded by mountains, elevation of more than 1000 meters, and away from the vast ocean of switzerland. Watchmakers have for the ocean is only vague impression. But the sea is so that Athens table nautical bell carry forward place, Ulysse Nardin is due to its clock process on the special technology has gained great popularity.
In 2005, Athens table for navigational watch family to join the new member digital watches for men , Maxi Chronograph chronograph, again ignited Athens table edge since the 1846 sailing legend, continuation of Athens marine chronometer high precision quality, this only 41 mm diameter Maxi chronograph, its high-quality exciting.

brunt of the problem is the weight increased, without increasing the power supply under the premise, how to reduce weight as the Athens faced problems. Per cubic centimeter of phosphorous nickel weighs nine grams citizen automatic watches , therefore, Athens is introduced into the semiconductor industry used in the manufacture of micro structure profound electroforming molding technology, optical lithography process and electroplating technology will phosphorous nickel etched into a hollowed-out escapement. Introduction of semiconductor technology omega speedmaster professional produced by the hollow escapement
Wheel, so that the original quality of the heavier nickel become very light sport watches for men ( can be almost no weight ), in full compliance with the Athens bidirectional escapement wheel" light " demand, to achieve the rotation force is smooth and more accurate target.
Every UN-160 movement through the Swiss official chronometer testing agency digital watches for men ( C.O.S.C ) certification, to increase the movement earthquake performance, more in the balance wheel is fixed on the splint to complete, is different in general only with semi splint fixed, in the earthquake and the stability of the more quality. A second stop device design and balance wheel on the low inert metal four adjusting screws, avoid the wheel in the 28800 speed