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The going train wheels are the only ones under load in a timepiece, since they bear the constant torque of the mainspring which is applied to the escapement, so these wheels are the only ones that receive significant wear. [5] In watches and some high quality clocks their arbors have jewel bearings. The going train in a modern clock or watch ...
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Sports game: Free to play with privileges that can be purchased from a shop Players manage a simulated soccer team to compete with others. Web Active Illyriad: Illyriad Games Ltd 2011: Browser-based Fantasy Real-time strategy: Free to play with in-game currency and privileges that can be purchased from a shop Fantasy MMORTS with city and empire ...
The Astrarium: tracing of an illustration in the Tractatus astrarii showing the weights, escapement, and main gear train but not the complex upper section with its many wheels The Astrarium of Giovanni Dondi dall'Orologio was a complex astronomical clock built between 1348 and 1364 in Padova , Italy, by the doctor and clock-maker Giovanni Dondi ...
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An astrarium, also called a planetarium, is a medieval astronomical clock made in the 14th century by Italian engineer and astronomer Giovanni Dondi dell'Orologio. The Astrarium was modeled after the solar system and, in addition to counting time and representing calendar dates and holidays, showed how the planets moved around the celestial ...