pendulum suspension-spring

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• Pendulum clock — A pendulum clock is a clock that uses a pendulum, a swinging weight, as its timekeeping element. From its invention in 1656 by Christiaan Huygens until the 1930s, the pendulum clock was the world s most accurate timekeeper, accounting for its… …   Wikipedia

• Pendulum — This article is about pendulums. For other uses, see Pendulum (disambiguation). Simple gravity pendulum model assumes no friction or air resistance …   Wikipedia

• Spring (device) — Helical or coil springs designed for tension Compression sp …   Wikipedia

• Torsion pendulum clock — A torsion pendulum clock, or torsion clock, is a mechanical clock which keeps time with a mechanism called a torsion pendulum. This is a weighted disk or wheel, often a decorative wheel with 3 or 4 chrome balls on ornate spokes, suspended by a… …   Wikipedia

• Torsion spring — A mousetrap powered by a helical torsion spring A torsion spring is a spring that works by torsion or twisting; that is, a flexible elastic object that stores mechanical energy when it is twisted. The amount of force (actually torque) it exerts… …   Wikipedia

• Foucault pendulum — The Foucault pendulum (pronEng|fuːˈkoʊ foo KOH ), or Foucault s pendulum, named after the French physicist Léon Foucault, was conceived as an experiment to demonstrate the rotation of the Earth.The experimentThe experimental apparatus consists of …   Wikipedia

• Riefler escapement — The Riefler escapement is a mechanical escapement for precision pendulum clocks invented and patented [German patent no. 50,739] by Sigmund Riefler in 1889. [cite book last = first = authorlink = coauthors = title = Special Catalog of the Joint… …   Wikipedia

• Escapement — redirects here. For the fisheries term for the stock surviving fishing pressures over a spawning cycle, see Spawn (biology). For other uses, see Escapement (disambiguation). A deadbeat escapement, used in many pendulum clocks. Click above to see… …   Wikipedia

• Anchor escapement — Anchor escapement. The anchor and escape wheel of a late 19th century clock …   Wikipedia

• clock — clock1 /klok/, n. 1. an instrument for measuring and recording time, esp. by mechanical means, usually with hands or changing numbers to indicate the hour and minute: not designed to be worn or carried about. 2. See time clock. 3. a meter or… …   Universalium

• Zytglogge — The Zytglogge tower is a landmark medieval tower in Berne, Switzerland. Built in the early 13th century, it has served the city as guard tower, prison, clock tower, center of urban life and civic memorial.Despite the many redecorations and… …   Wikipedia