Perpetual calendar known as the clock is one of the 6 complex functions, loved by the watch lovers. What is the basis of its calendar? How does it relate to a simple, practical, and inexpensive calendar? What is the relationship between it and other complex functions? Calendar really can manage thousands of years?
Modern watch can perform well calendar function?
Modern watch in the date calendar display function Difficulty Level 3: Level: calendar, calendar + week (or double calendar); two: calendar; three: calendar. Including calendar and week functions are based on a 24-hour day and night, seven day and night for a week. The calendar is calculated on the basis of 30 days for one month and 12 months for one year. Due to the change in length of February (28 days of flat, 29 days of intercalary), the complexity of the calendar suddenly increased. Because of the leap year once every four years, the perpetual calendar will be harder. But it's also a place that attracts watchmakers and fans, and a perpetual calendar means accomplishment.
Watchmaker's intentions
The artisans in Geneva are known for their diligence and studiousness. Helping people to solve the mysteries and calendars of time has become a special mission that they can help others. Their help is a watch that has the appropriate complexity of indicating the calendar, and of course hours, minutes and seconds.
[page]
The indication of the date is in the early clock. Full calendar means that the phases of the moon, the moon and the moon usually appear very quickly. By the late 16th century, the calendar appeared on the table. Even in the early 1900s, watches were gradually expanding their market share, and manufacturers did not see the business opportunities for putting the date on the watch. In 1904, Cartier created a watch for flight savior Santos Dumont, a modern day watch. Flight home God only need hours and minutes, do not need a calendar. The first complicated watch is still in the future. Until 1915, manufacturers recognized the general need for date display. Since then, dates have become increasingly important in conferences and business life. After an arduous working day, men or women can not help but look at the date on the watch, even though they have seen it many times. So what is the basis of these calculations, that is, how is the calendar we are currently using?
From the dial complexity can be seen
Modern calendar - Zhu Li Ou calendar
In ancient Rome, the Roman calendar was in turmoil. Each year contains 12 months, alternately 29 and 30 days. You do not have to be a mathematical genius, and you can notice the obvious discrepancies between the Roman calendar and the astronomical reality of the solar system. So, when the trees sprout in the winter, people run to ask the clergymen. Julius Caesar thoroughly repaired the apparently cynical calendar system. His reform was based on the length of the solar year, which reached 365 days, 5 hours and 55 minutes of precision.
Calendar
do you know? March 1 was New Year's Day
In the calendar system of Julio Caesar reform, 365 days start on March 1. Then lost 6 hours a year (to be precise 5 hours and 55 minutes) is added every 4 years in February (and year). The council was so encouraged by the fact that the parliamentarians proposed to give honor to their leaders, using his name to name the month in which he was born (according to Roman calendar, the fifth month of his birth, Quintilis). Thus, the name of our present July is named after Julio Caesar, July. So what is the name of the other month? Octavius, Caesar's adoptive son and political heir, or Augustus, whose name is easier to remember, has also been given similar promises by parliament. In honor of its conquest of Alexandria in the 6th month of 31 BC, the removal of Anthony and Cleopatra, the June calendar of Roman calendar was named after him, and we are now named in August Augustus. However, unlike Caesar's July, there were only 30 days in August, something unacceptable to future monarchs. As a result, August was changed to 31 days. This means that the coming months have to be adjusted accordingly. The day added in August will eventually be digested this month at the end of this year. Note that the end of the Roman calendar is February. Therefore, February was reduced to 28 days, only leap year is 29 days. This system of Zhu Li'an dominates daily life.
Calendar changes according to the rules
Determination of modern calendar - Gregorian calendar, 2100 will not have a leap month
The final reform was carried out by Pope Gregory XIII on 15 October 1582. This calendar has always been impeccable, only in 2100 will attract attention. Unlike regular leap year cycles, there will be no February 29 that year. The reason is that Julian calendar will be 0.0078 days longer than the actual time. To compensate for this error, leap years have to be canceled three times every 400 years or in each year (1700, 1800, 1900, 2100, 2200, etc.) that can not be divisible by 400. Watchmakers do not have to pay too much attention to the Gregorian calendar since the calendar was clocked in because the perpetual calendar does not need to consider this tiny error until 1900.
[page]
Fashion trend school
Perpetual calendar display more like fashion
There is no technical difference in whether the date is indicated by a pointer or a numeric dial. Disc display requires a window on the dial, while the pointer shows the dial on the need to print the appropriate number. Choose which display is basically determined by the fashion and designer's taste at the time. And what's interesting is that disc and pointer displays alternate every few years. It's very much like fashion (though traditional manufacturers are reluctant to associate themselves with fashion, customer tastes determine their business benefits). In general, digital date display is easier to identify than pointer. In spite of this, many people still wear glasses to watch the date. That is why A. LANGE in the town of Glashütte in Germany launched the revival of the "large date" technique in 1994. That's not a new idea. Since 1932, many Swiss watchmakers have begun using big calendars, such as the square calendar model of Sovil. The calendar model has two discs, one for the tens and the other for the single digits. In this way, the calendar can be made larger and easier to read. Another example is the simpler model of Helvetia in 1934, as well as the Mimometer of Mimo. The movement maker Venus also made a calendar display. The advantages of Lange did not last long. Soon, the rest of the industry realizes how useful it is as a complex feature.
Perpetual calendar watch
Perpetual calendar watch, 1925 appeared
In 1925, the calendar into the watch. However, watchmakers have also been ignoring the rules of Gregory XIII. His upright reason is that, even if all conditions are met, the process of a mechanical device to automatically remember three leap years every 400 years, this technology may not have any real meaning. However, the calendar can still be accurate in 100 years. This 100 years exactly covers the year 2000. Any year that can be divided by 400 can be achieved in 29 leap years and in February of that year. Unfortunately, the complex mechanical structure of the perpetual calendar is not as readily appreciated as it exists in a relatively hidden form. This highly intelligent mechanism consists of more than 60 parts and is mounted on a separate cleat and is located directly on the back of the dial. Perpetual calendar with a different movement with. Its brain is a moon wheel. Lunar round through the program design, engraved with different depression, respectively, said different lengths. The tappet responsible for the display is in close proximity to the edge of the moonwheel (cam), day after day, determining whether the next month will begin on the 28th, or on the 29th, 30th or 31st. With this system, the calendar can accurately display the date and the month. Simpler, cheaper and more practical variant is the so-called calendar. The agency only distinguishes between the 30th and 31st of the month between months. Except in February. This month, a simple manual adjustment can be maintained for 365 days without further adjustment. And this calendar is sufficient to ensure accurate daily display.
[page]
Perpetual calendar into the trend
30 year lunar calendar
Watchmaker Michelle. Inspired by the restoration of a Muslim calendar, Parmigiani's 30-year uninterrupted lunar calendar, launched in 2011, operates on a lunar cycle of 30 lunar cycles, exactly in accordance with 19 of them and 11 Leap year to do transformation. Based on the Paris Observatory's ephemeris, Parma Channing's thirty-year lunar calendar is a theory because it is based on the observations of celestial mechanics, since the uninterrupted design of the lunar calendar has not yet appeared in watch history . The calendar function will automatically change with the cycle of the lunar calendar without any action by the user. Not only that, the lunar calendar also offers two different leap year cycle options, only need to know the applicable lunar categories and Can be adjusted in the local.
Calendar is convenient
For the calendar, the so-called four-wheeled round is the core. The turnaround of the four-year round determines the appearance of a leap month. Higher steps propelled the four-year round. These steps are perceived by the lever and eventually show the correct date. Perpetual calendar high-end manufacturers have been developed and improved. IWC has developed a mechanical device that does not require any error correction facilities and can be quickly adjusted. Moon phases are also controlled, so there is no need to adjust separately. In 1985, Kurt Klaus, the chief designer of IWC watches, created the perpetual calendar of IWC watches. This movement a total of more than 400 parts, its extraordinary place is the ease of use. The calendar has the longest transmission between the transmission and the escapement wheel gear ratio of 6.3 billion to 1 small, and the device has a hundred years of display films, as the name suggests, only need to be changed once every 100 years to adjust the four The last two digits in the year display. "The really smart place is it's easy to use," said Mr. Claus. This may indicate the design direction of highly complex watches.
Calendar watch topic : We all know 365 days a year can be divided into large, Satsuki, leap year every four years there, which are common sense we routine knowledge. When you encounter a watch, its date shows that they can be big, Satsuki. Even a leap year leap year can be automatically resolved, you will be surprised for this amazing display? It is a calendar watch ... [into the topic]
Put the credit card , some small charge and Coin , it will save your space.Many card slots will give your enough capacity .We sell slim Card Wallet,business Card Holder ,Credit Card Holder,Rfid Id Card Holder,wallet card holder,etc.
We employ the most creative designers and tech brilliant engineers to make the best cases. We believe our high-quality products with competitive prices will satisfy your needs.
The productive process :
Make the Products Mould –Cutting the fabric –Do the half products – Finish products – Cleaning –QC- Package – Shippment .
Rfid Id Card Holder,Id Credit Card Holder,Real Leather Credit Card Holder,Custom Color Credit Card Holder
Guangzhou Ysure Electronic Technology Co., Ltd. , https://www.ysurecase.com
没有评论:
发表评论