Perpetual calendar: Unterschied zwischen den Versionen
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'''Perpetual calendar''' | '''Perpetual calendar''' | ||
{{other languages|[[Ewiger Kalender|de]]|[[Quantieme perpetual|fr]]|[[x|nl]]|[[Вечный календарь|ru]]}} | {{other languages|[[Ewiger Kalender|de]]|[[Quantieme perpetual|fr]]|[[x|nl]]|[[Вечный календарь|ru]]}} | ||
| − | [[Bild:Langematik-Perpetual Platin.jpg|thumb|[[Langematik-Perpetual]]<br>with | + | [[Bild:Langematik-Perpetual Platin.jpg|thumb|[[Langematik-Perpetual]]<br>with perpetual calendar]] |
The calendar display of a mechanical watch is called "perpetual" if it automatically updates the date, the day of the week, the month, and the moon phase displays. It not only takes into account the different durations of the months in the course of a year but also "knows" which years are leap years. The complex mechanism is controlled by so-called cams. | The calendar display of a mechanical watch is called "perpetual" if it automatically updates the date, the day of the week, the month, and the moon phase displays. It not only takes into account the different durations of the months in the course of a year but also "knows" which years are leap years. The complex mechanism is controlled by so-called cams. | ||
Version vom 2. Februar 2009, 00:01 Uhr
Perpetual calendar
| other languages: de fr nl ru |
The calendar display of a mechanical watch is called "perpetual" if it automatically updates the date, the day of the week, the month, and the moon phase displays. It not only takes into account the different durations of the months in the course of a year but also "knows" which years are leap years. The complex mechanism is controlled by so-called cams.
A perpetual calendar is an extraordinary exercise in the design and manufacture of this complication.