A close look or a watch is a kind of a timepiece that a person wears for talking about time. Watches first has been around since in 1600s as a modification of spring powered clocks. Modern watches possess a large amount of other functions like that of the calendar in addition to the display of time.
Most common kind of wristwatch is worn on person`s wrist and is tightened with help of a watchband that is made up of nylon, leather, every other plastic strap, metal link or sometimes, even ceramic. Before this, watches were pocket watches that have been carried separately.
Watch designed was greatly improved in the 21st Century due to technological advances in neuro-scientific metallurgy, physical vapor deposition and composite materials. Better materials are actually employed for making watches which are more durable, more accurate, more aesthetic and much more reliable.
Escapement is a kind of mechanism that limits and controls the unwinding in the watch. It converts a simple unwinding into a periodic energy release. This is done by gear interlocking that switches among `driven` and `free` state.
Balance wheel combined with the spring or Hairspring forms a harmonic oscillator. This oscillator controls the apparatus system motion in the watch. This is similar to a pendulum clock.
Tourbillon is really a rotating kind of frame used for escapement. It cancels the results of the bias in timekeeping using gravity. Otherwise, the watch would have to remain within the same position for a lot of time.
Movement in a watch is the mechanism which measures the time and therefore helps to display the correct current time. The movements can be mechanical, electronic and perhaps, even both. Most of the watches use electronic timekeeping these days even if the face of watch includes a mechanical hand.
Watches are mainly classified on foundation of their movements. The classifications are Mechanical Movements, Tuning Fork Movement, Electronic Movement and Rc movement. The source of power used could be a spring. There are Self Winding springs also present. Some modern watches from the movement from the wearer, some watches run with the help of the batteries, or electronic power. Some watches are light powered, although some seem to be powered by the body heat.
Time display is usually done in the form of Analog or Digital display. Analog display is performed using two hands, one each for hour and minute and often another hand can be used to show seconds. In digital display, usually there is a LCD screen which the time in gifs appears.
All of the watches show time in atleast hours and minutes. Few watches also show the date, day and some of them have alarms. Some more complicated watches have stopwatch, lunar phases, Perpetual Calendar, Minute repeater and equation of times.
Once the sales of Swiss watch makers transpired, they redesigned it and produced a much cheaper version in end of Twentieth century. With the help of some graphic artists, they also launched a range of Fashionable watches. Dual time watches for international travelers specified for. Collectable or Jewelry type watches were designed which had high miniaturization and precision together with nice aesthetic look. A few of the leading companies with this type of watches are Papet Phillipe, Jaeger-LeCoultre, Rolex. Mass production is performed by companies like Omega, Tag Heurer and Breitling.
Other type of watches include computerized multifunction watches with electronic things like Calculators, Digital Cameras, Game titles, GPS receivers, Cell phones ad Keydrives were embedded in the watches. Some recent watches are also marketed as Water-resistant as they are not as much impacted by water as other watches and therefore are categorized on the basis of their water repelling capability.