Wednesday, February 20, 2013
energy, at first as a pendulum (energy is never depleted pendulum, its energy is very small), then ties
last, a structure is designed so that the energy released slowly and not released all at the same time, the structure of the original in a single pendulum (pendulum timer timer clock), then the pendulum rotation located at the center of a piece of spring and light (in the timer timer clock fruits tangerines and watches), and quartz crystal, and the more sophisticated structure ...
gear systems, motion control and communication tasks from the source to the display units
display systems, including metal, bells, ...
The watchmaker has improved his invention in many different forms. Designed the timer timer clock little more and eventually become a major challenge, because they also have to ensure the accuracy and durability of the watch. Watches can be a work of art by a talented artist, but also can be mass-produced for use in the home.
First, the fastener system was developed in the 15th century, and it has become a new challenge for the watchmaker.
Kim min timer timer clock first appeared in 1475, is mentioned in Almanus Manuscript of the convent Paul.
During the 15th and 16th centuries, the art of timer timer clock development in towns such as Nuremberg, Augsburg, Blois. Some watches have only one needle and the surface of the timer timer clock is divided into four intervals to the reader easily follow the stopwatch timer clock. A complete recovery system designed by Jobst Burgi in 1585. The accuracy of the timer timer clock he helped Johannes Kepler and Tycho Brahe astronomical observations with higher accuracy.
Second hand appeared around the year 1560 in the collection of Fremersdorf. But it works not very accurate, and the second hand only helps us realize that the timer timer clock still works.
In 1653, Galileo Galilei invented the pendulum led to the introduction of the pendulum timer timer clock by Christiaan Huygens built. He was determined if the pendulum has a length of 99.38 cm, a cycle of it will be exactly 1 second. In 1670, William Clement invented in the form of an anchor system to help improve accuracy. Since then, the minute hand and second hand appears in most watches.
In 1761, a watchmaker named John Harrison has achieved a major award has successfully made a wrong timer timer clock runs only 5 seconds in 10 days.
William Clement in 1670 to design a pendulum timer timer clock in a long box, since then it has become a decorative item in a lot of family time.
On November 17, 1797, Eli Terry timer timer clock copyrighted on first. He was one of those who set the timer clock industry in the United States.
Alenander Bain, a Scottish mechanic, who invented the electric timer timer clock in 1840, using an electric motor and a magnet system. In 1841, he was granted a patent on the electromagnetic pendulum.
Today, the timer timer clock time is measured in many different ways, from the quartz crystal to the half-life of a radioactive substance. Even mechanical timer timer clocks before, we only need to use batteries not need to wire up the column as before.
These kinds of watches
timer timer clocks can be classified by the way it displays the time as well as the method it uses to count the time.
How to display time
A linear timer timer clock at Piccadilly Circus in London. A bar moving in the sunlight at the top for the exact hour.
Stonehenge, one of the sundial was the first known
We talk about their day. We calculate it by seconds, minutes, hours, days, months, years, decades, centuries and millennia. Before the invention of the stopwatch clock, people use many different things to time, such as: incense, candles, calendars. People also use the sun, the sand to divide the day into hours. stopwatch clock as we know it today was developed by the devotees in Europe in the 17th century. They need to know the exact time to meet at the church. The Chinese invented the water stopwatch clock in the 17th century, but the ancient Egyptians had them before long. In the 1700s, people had stopwatch clocks and watches, accurate to the minute.
Sundial, hourglass, incense and candles
The stopwatch clock is one of the oldest inventions of man, when the man asked to identify a process that occurs in a period of fast or faster. While the moon and the stars can be used to measure long periods of time, the short period of time is another matter. One of the first solutions that people known as the sundial, but only be able to measure small intervals during the day by using the shadow of the sun shone through the milestones.
Later, candles and the incense is used to measure time. Period to we burned approximately equal and are often used to estimate the time.
There is also the kind of hourglass. There, fine sand to flow through a small hole in a certain speed, thereby determining a period of time.
Historian Vitruvius record that in ancient Egypt, people use these kinds of watches called clepsydra. Herodotus also mentions an instrument other time of the Egyptians activity by mercury. The materials on the water meter is also found in many parts of the Arabian Peninsula, China and South Korea.
The first mechanical stopwatch clocks
Big Ben stopwatch clock in London, England has long hour hand 1.63 m long while the minute hand 4.3 m
But not any watches left over from the Middle Ages, but the written record of the church is also a somewhat secret history of the stopwatch clock.
Belief in the Middle Ages must use the stopwatch clock to measure the time for centuries, daily prayer and work is strictly regulated. Therefore one can use tools such as water stopwatch clock, sundial and candles combined with other instruments to signal like tones by simple mechanical structure which uses heavy fruit. Therefore, the first type of stopwatch clock does not use needles but using audio signal.
So, in more modern language, the word "stopwatch clock" comes from the Latin cloca meaning "bell".
New mechanical structure for the stopwatch clock
In between the years 1280 and 1320, the church's documentation of the types of instruments to measure the rise time. This structure may represent a new stopwatch clock is designed in this period: the system consists of a heavy work associated with the gyroscope. The energy in the stopwatch clock is controlled by a structure called the "back".
The mechanical equipment is applied to the stopwatch timer clock for two main reasons: to mark, indicating the time and later marked the movement of the celestial bodies. First demand is for the convenience of management, and the need for science, astronomy, and the relationship between them with religion. The first stopwatch clock is usually located in the main tower, not necessarily metal but just capable of signaling the start. Other complicated watches appeared and needles for hours and even an automatic structure.
In 1283, a stopwatch clock was installed at Dunstable Priory, it is worth noting here that it is one for stopwatch clock mechanical stopwatch clock is not the first use of water power. In 1292, a similar stopwatch clock is said to have been installed in the church of Canterbury. In 1322, another one was installed in Norwich. Such works requires the efforts of two skilled workers in the next two years.
The parts of the body stopwatch clock
Types of watches
The interior of the mechanical clock
In all mechanical watches are distinguished four basic knots - engine, transmission, running gear and regulator having the following main parts:
spring motor, drum set
Gear Facility winder, in developing its spring driven sprockets
anchor wheel associated with second hand items and adjustment
To counter timer in the narrow sense used regulyatorat. Toothed wheels attached to that arrow on the dial, count per unit time. If it is considered that the Earth's rotation axis is uniform, it becomes the scale for comparing intervals. Per unit of time usually taken second or 1/86400 of the day. timer clockregulators have resisted so pipette stretches are equal or of a second, or half, 1/4 or 1/5.
The core of electronic quartz watches were stabilized electric oscillations microcontroller to calculate the time and the derivation of the digital display. Watches that are powered by AC mains, may not have its own generator, and use the variable frequency electrical current. Time display with numbers such as 13:22. Hand-held electronic watches, electronic watches and other. When this timer clock is disconnected from the mains or battery pack, and it starts counting from 12:00, or stay at 12:00 by flashing at regular intervals.
The first hand-held electronic watches have LED display and can show a short time. Then they used the properties of liquid crystals to orient in an external electric field and pass in the direction of light polarization.
Electronic clocks used by the 1960s. Especially for people with impaired hearing, telecommunications companies offer audio, or so-called talking clocks or time communicate a language or produce a beep a number of times corresponding to hours. timer clockradios are called electronic or quartz watches that have the ability to collate their own time on special stations or satellites with GPS.
Handheld electronic watch
Terms 'Boom time' and 'anti-clockwise' is used to indicate the direction of rotation.
The traditional direction of clockwise coincides with the direction in which to move the shade of the horizontal sundial in the Northern Hemisphere.
On dials with Roman numerals fourth hour is sometimes labeled as IIII instead of IV. Ads or windows during the firing usually watch shows 10:10 because nyapomnya smile and found that positively affects the buyers.
In the past each hour is celebrated by a beep, usually bells to ring as many times as hours.
timer clock satisfy natural needs of man to measure short time intervals.
The size of the timer clock is different today - from atomic clocks, watches to watches towers. They are driven by a variety of mechanisms - gravity, springs, electricity etc. and are governed by different devices, one of which is a pendulum.
The stopwatch is a type of clock, designed to measure short periods of time with high precision. Its name comes from Greek mythology, specifically the god of time Chronos. First used in marine navigation and marine chronometer is called. It defines longitude using stellar navigation. John Harrison was the first to achieve the desired precision of these devices.
The watch is one of the oldest human inventions. One of the first clocks used in antiquity sun. In its current form the timer clock(24-hour) is used from the 12th century.
timer clockat the Royal Observatory, Greenwich
Primitive means of measuring time known from antiquity. For example, in ancient Egypt device, dating around 1500 BC the shape of a T-square, measured the time by the shadow it casts. "T" device is oriented to the east in the morning. At noon, the device is rotated so that it can cast a shadow, and in the evening.
Sundials use the stylus to overshadow marked signs are calibrated so as to indicate each hour. Sundials indicate local time.
The most accurate gauges of old time water clocks (also called klepsidra). One was found in the tomb of Egyptian pharaoh Amenhotep I (1525-1504 BC). They can take time, even at night, but have the drawback that they require human intervention to regulate water leakage. Greeks routinely recorded all astronomical observations as accurately as possible timing. Arab engineers made several improvements to the water timer clockin the Middle Ages. In the 11th century the Chinese invented the first mechanical watch with a trigger mechanism.
The hourglass uses the flow of sand to the timing. Most are widely used in navigation. Thus Ferdinand Magellan used 18 of them to every ship in his circumnavigation of the world Travels (1522). Aromatic sticks and candles are often used in churches all over the world for online timing. In monasteries in Europe during the Middle Ages using water and mechanical watches. Great progress significantly improved precision marked devices invented by Galileo Galilei and especially Christiaan Huygens, who coined the clock.
Today most accurate devices for measuring and timing are atomic clocks that can keep you up to the second accuracy over millions of years. They are used to calibrate other clocks and other devices for timing. Since 1967, the International System of Units used for its unit of time - seconds the properties of cesium atoms. SI defines a second as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium atom-133.
Today is also the Global Positioning System in accordance with NTP (Network Time Protocol) can be used to synchronize all systems associated with time.