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An Ancient Egyptian sundial (Rijksmuseum van Oudheden) Vrihat Samrat Yantra, 88 feet (27 m) tall sundial at the Jantar Mantar in Jaipur Built in 1727. The first devices used for measuring the position of the Sun were shadow clocks, which later developed into the sundial.
The Corpus Clock at Corpus Christi College, Cambridge. The Corpus Clock, also known as the Grasshopper clock, is a large sculptural clock at street level on the outside of the Taylor Library at Corpus Christi College, University of Cambridge, in the United Kingdom, at the junction of Bene't Street and Trumpington Street, looking out over King's Parade.
Disassembled analog quartz clockwork; quartz crystal oscillator (top left), Lavet-type stepping motor (left) with a black rotor sprocket and connected white and transparent gears (right). These gears control the movement of the second, minute and hour hands. Basic quartz wristwatch movement.
The clockwork universe is a concept which compares the universe to a mechanical clock. It continues ticking along, as a perfect machine, with its gears governed by the laws of physics , making every aspect of the machine predictable.
[5] A careless lubricant choice can result in the use of inappropriate or "Poor-quality oil" on clockwork, which "can become sticky leading to mechanical problems." [2] The inexperience of a non-professional can also lead to "the use of too much oil, or oil in the wrong place" [8] during attempts to lubricate clockwork. The application of too ...
A clockwork mechanism is often powered by a clockwork motor [4] consisting of a mainspring, a spiral torsion spring of metal ribbon. Energy is stored in the mainspring manually by winding it up, turning a key attached to a ratchet which twists the mainspring tighter. Then the force of the mainspring turns the clockwork gears, until the stored ...
Movement (clockwork) (4 P) T. Turret clocks (1 C, 8 P) W. Watch models (4 C, 35 P) Pages in category "Clock designs" The following 44 pages are in this category, out ...
Each of the 'planetary' dials used complex clockwork to produce reasonably accurate models of the planets' motion. These agreed reasonably well both with Ptolemaic theory and with observations. [39] [40] Wallingford's clock had a large astrolabe-type dial, showing the sun, the moon's age, phase, and node, a star map, and possibly the planets.