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The calendar plate below the clock was replaced by a copy in 1880. The original made by Josef Mánes is stored in the Prague City Museum. [21] On the edge of the circle is a church calendar with fixed holidays and the names of 365 saints. The board displays allegories of the months. Smaller images represent zodiac signs.
The earliest depiction of a clock powered by a hanging weight is from the Bible of St Louis, an illuminated manuscript made between 1226 and 1234 that shows a clock being slowed by water acting on a wheel. The illustration seems to show that weight-driven clocks were invented in western Europe. [79]
The Astrarium of Giovanni Dondi dell'Orologio was a complex astronomical clock built between 1348 and 1364 in Padova, Italy, by the doctor and clock-maker Giovanni Dondi dell'Orologio. The Astrarium had seven faces and 107 moving gears; it showed the positions of the sun, the moon and the five planets then known, as well as religious feast days.
It is the third clock on that spot and dates from the time of the first French possession of the city (1681–1870). The first clock had been built in the 14th century and the second in the 16th century when Strasbourg was a Free imperial city of the Holy Roman Empire. The current, third clock dates from 1843. [1]
In 1752 Bartolomeo Ferracina started work on replacing the clock, having successfully tendered for the job in public competition. He installed a new movement, removed the planetary dials, installed a rotating moon ball to show the phase, and changed the numbering of the clock face from the old Italian style (I to XXIIII in Roman numerals) to the 12-hour style, using two sets of Arabic numerals ...
The Astrarium, which he designed and built over a period of 16 years, was a highly complex astronomical clock and planetarium, constructed only 60 or so years after the very first all-mechanical clocks had been built in Europe, and demonstrated an ambitious attempt to describe and model the planetary system with mathematical precision and ...
The Mengenlehreuhr clock face utilizes 24 light switches (1+4+4+11+4=24) to display time in 0-24 hour, 0-59 minute and even/odd second. Second: The top big circular light is the second mark. Since 0 is represented as an OFF in the most logical circuit, It’s an even second when the light is OFF. When the second light is ON, it’s on an odd ...
The clock dates back to the early fourteenth century, possibly around 1320. It is suggested that it was built by Peter Lightfoot, a Glastonbury monk. [2] The clock's case was built in the Elizabethan era, but the face and dial are of a much greater age; the first documents relating to the clock concern repairs carried out in 1409. [3]