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- Castle_clock abstract "A castle clock is a clock whose face is mounted outside a castle or perhaps a church tower. They may be elaborate or simple.Al-Jazari constructed an elaborate clock and described it in his Book of Knowledge of Ingenious Mechanical Devices in 1206. It was about 3.3 metres high (11 feet), and had multiple functions alongside timekeeping. It included a display of the zodiac and the solar and lunar paths, and a pointer in the shape of the crescent moon which travelled across the top of a gateway, moved by a hidden cart and causing automatic doors to open, each revealing a mannequin, every hour. It was possible to re-program the length of day and night daily in order to account for the changing lengths of day and night throughout the year, and it also featured five robotic musicians who automatically play music when moved by levers operated by a hidden camshaft attached to a water wheel. Other components of the castle clock included a main reservoir with a float, a float chamber and flow regulator, plate and valve trough, two pulleys, crescent disc displaying the zodiac, and two falcon automata dropping balls into vases.".
- Castle_clock thumbnail Clock_of_al_Jazari_before_1206.jpg?width=300.
- Castle_clock wikiPageID "19313051".
- Castle_clock wikiPageRevisionID "600519787".
- Castle_clock hasPhotoCollection Castle_clock.
- Castle_clock subject Category:Analog_computers.
- Castle_clock subject Category:Clocks.
- Castle_clock subject Category:History_of_computing_hardware.
- Castle_clock subject Category:Horology.
- Castle_clock type AnalogComputer102708224.
- Castle_clock type AnalogComputers.
- Castle_clock type Artifact100021939.
- Castle_clock type Clock103046257.
- Castle_clock type Clocks.
- Castle_clock type Computer103082979.
- Castle_clock type Device103183080.
- Castle_clock type Instrument103574816.
- Castle_clock type Instrumentality103575240.
- Castle_clock type Machine103699975.
- Castle_clock type MeasuringInstrument103733925.
- Castle_clock type Object100002684.
- Castle_clock type PhysicalEntity100001930.
- Castle_clock type Timepiece104437953.
- Castle_clock type Whole100003553.
- Castle_clock comment "A castle clock is a clock whose face is mounted outside a castle or perhaps a church tower. They may be elaborate or simple.Al-Jazari constructed an elaborate clock and described it in his Book of Knowledge of Ingenious Mechanical Devices in 1206. It was about 3.3 metres high (11 feet), and had multiple functions alongside timekeeping.".
- Castle_clock label "Castle clock".
- Castle_clock sameAs m.02qd_7.
- Castle_clock sameAs Q5050347.
- Castle_clock sameAs Q5050347.
- Castle_clock sameAs Castle_clock.
- Castle_clock wasDerivedFrom Castle_clock?oldid=600519787.
- Castle_clock depiction Clock_of_al_Jazari_before_1206.jpg.
- Castle_clock isPrimaryTopicOf Castle_clock.