watch watch is a watch that is meant to be carried or used by someone. It's designed to keep working despite movement caused by the person's activity. Watches are designed to be worn around the wrist, attached by watch strap or other type of bracelet. A pocket watch is designed for someone to carry in a pocket.
Wristwatches developed in the 17th century from the spring-powered clock, which appeared at the beginning of the 14th century. For most of its history, the clock is a mechanical device, driven by working hours, backed by the main thrust spin, and keeping time with the oscillating balance wheel. In the 1960s electronic quartz clocks were invented, powered by batteries and stored time with quivering quartz crystals. In the 1980s, quartz clocks had taken over most of the market from mechanical clocks.
Today most watches are cheap and medium price, used primarily for timeliness, have quartz movement. Expensive collectibles, valued more for their elaborate skills, aesthetic appeal and glamorous design than simple timekeeping, often have traditional mechanical movements, although they are less accurate and more expensive than electronics. Additional features, called "complications", such as moon phase displays and different types of turbillon, are sometimes included. Modern watches often feature days, dates, months and years, and electronic watches may have many other functions. Time-related features such as timers, chronographs and alarm functions are common. Some modern designs incorporate a calculator, GPS, and Bluetooth technology or have a heart rate monitoring capability. Some watches use clock radio technology to regularly improve the time.
Developments in 2010 include smartwatches, which describe electronic devices such as computers designed to be worn on the wrist. They generally incorporate timing functions, but this is only a small part of the smartwatch facility.
The study of timeliness is known as horology.
Video Watch
Histori
Watches evolved from a portable spring clock, which first appeared in 15th century Europe. Watches were not widely used in the pockets until the 17th century. One account says that the word "clock" comes from the Old English word
The big leap forward in accuracy occurred in 1657 with the addition of a spring balance to the balance wheel, a discovery that was disputed both at the time and since between Robert Hooke and Christiaan Huygens. This innovation increases the accuracy of the watches is very large, reducing errors from maybe a few hours per day to maybe 10 minutes per day, resulting in the addition of minute to face needle from about 1680 in England and 1700 in France.
The increased accuracy of the balance wheel focuses on the mistakes caused by other parts of the movement, triggering a wave of two-century clockmaking innovations. The first thing to fix is ​​the escape. The breakout threshold was replaced in quality watches by cylinder escapement, invented by Thomas Tompion in 1695 and further developed by George Graham in the 1720s. Improvements in manufacturing such as the gear machine designed by Robert Hooke enabled an increase in the volume of watch production, although finishing and assembling were still done by hand till the 19th century.
The main cause of errors in the wheel balance timepieces, caused by changes in the elasticity of the spring balance of temperature changes, is solved by the bimetallic temperature wheel created in 1765 by Pierre Le Roy and enhanced by Thomas Earnshaw. The sacrifice of the lever is the most important technological breakthrough, and was invented by Thomas Mudge in 1759 and repaired by Josiah Emery in 1785, though it only gradually began to be used from about 1800 onwards, especially in England.
Britain has been dominating in watchmaking for much of the 17th and 18th centuries, but maintaining a production system directed to high-quality products for the elite. Despite attempts to modernize the clock-making with mass production techniques and the application of duplicate tools and machinery by the British Watch Company in 1843, it was in the United States that the system was taking off. Aaron Lufkin Dennison started a factory in 1851 in Massachusetts that used interchangeable parts, and in 1861 he ran a successful company incorporated as Waltham Watch Company.
Watch
The concept of watches returned to the earliest production of watches in the 16th century. Elizabeth I of England received a watch from Robert Dudley in 1571, described as an armed watch. The oldest surviving watch (later described as a wristwatch) is made in 1806 and given to José © de Beauharnais. From the start, watches were almost exclusively worn by women, while men used pocket watches until the early 20th century.
Wristwatches were first worn by military men towards the end of the 19th century, when the importance of synchronizing maneuvers during the war, without the potential to reveal plans to enemies through signals, was increasingly recognized. The Garstin Company of London patented the "Watch Wristlet" design in 1893, but they probably produced similar designs from the 1880s. Officers in the British Army began using watches during colonial military campaigns in the 1880s, such as during the Anglo-Burmese War of 1885. During the First Boer War, the importance of coordinating troop movements and synchronizing attacks on Boer's highly mobile guerrillas became extremely important. , and the use of watches then became widespread among officer classes. Mappin & amp; Webb started their successful campaign "campaign watchdog" for soldiers during a campaign in Sudan in 1898 and accelerated production for the Second Boer War a few years later. On the European continent Girard-Perregaux and other Swiss watchmakers began supplying German naval officers with watches around 1880.
The initial model was basically a standard pocket watch fit for leather straps, but in the early 20th century, manufacturers started to produce artificial watches. Company Swiss Dimier FrÃÆ'¨res & amp; Cie patented the watch design with the now standard wire lugs in 1903. Hans Wilsdorf moved to London in 1905 and set up his own business, Wilsdorf & Davis, with his brother-in-law Alfred Davis, provides quality watches at affordable prices; the company then becomes Rolex. Wilsdorf was the first to switch to watches, and contracted the Swiss Aegler firm to produce a watch line.
The impact of the First World War dramatically changed the public perception of the courtesy of men's watches and opened up mass markets in the postwar era. The artillery tactics of the creeping attack, developed during the war, require an appropriate synchronization between the artillery shooters and the infantry who advanced behind the barrage of attacks. The service watches produced during the War are specifically designed for the hardness of the trench warfare, with luminous dial and unbreakable glass. The British War Department began issuing watches for combatants from 1917. At the end of the war, almost all enlisted men wore watches, and after they were demobilized, the fashion was soon caught: the British Horror Journal wrote in 1917 that "watches bracelets are used a bit by tight sex before the war, but are now seen on the wrists of almost every man in uniform and many men in civilian clothes. " In 1930, the wrist to pocket watch ratio was 50 to 1. The first successful self-winding system was invented by John Harwood in 1923.
The introduction of quartz clocks is a revolutionary increase in watch technology. In place of a balance wheel that oscillates at maybe 5 or 6 beats per second, it uses a quartz crystal resonator that vibrates at 8.192 Hz, driven by a battery-powered oscillator circuit. Since the 1980s, more quartz watches than mechanical ones have been marketed.
Maps Watch
Movement
The watch movement is a mechanism that measures the passage of time and displays the current time (and possibly other information including date, month and day). Movements can be completely mechanical, fully electronic (potentially without moving parts), or both may be a combination of both. Most of the clocks aimed primarily for the timeliness of today have an electronic movement, with mechanical hands on the clock display that shows the time.
Mechanical
Source of the article : Wikipedia
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