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2. Standing Twelve Heavenly Generals (Tokyo National Museum)

   en.wikipedia.org/wiki/Standing_Twelve_Heavenly...

   Together with the other seven figures of the set (owned by the Seikadō Bunko Art Museum), they are designated Important Cultural Properties. The Twelve Heavenly Generals , also known as Twelve Divine Generals [ 2 ] or Juni Shinsho , [ 1 ] are the protective deities, or yaksha , of Bhaisajyaguru (Tathagata), the buddha of healing and medicine ...

3. Pendulum - Wikipedia

   en.wikipedia.org/wiki/Pendulum

   "Simple gravity pendulum" model assumes no friction or air resistance. A pendulum is a device made of a weight suspended from a pivot so that it can swing freely. [1] When a pendulum is displaced sideways from its resting, equilibrium position, it is subject to a restoring force due to gravity that will accelerate it back toward the equilibrium position.

4. Galileo's escapement - Wikipedia

   en.wikipedia.org/wiki/Galileo's_escapement

   Galileo was the first to investigate the timekeeping properties of pendulums, beginning around 1603. [4] His interest was sparked by his discovery that, at least for small swings, the pendulum is isochronous: its period of swing is the same for different size swings. He realized that this property made the pendulum useful for timekeeping.

5. Apotropaic magic - Wikipedia

   en.wikipedia.org/wiki/Apotropaic_magic

   Figures may also have been carved at fireplaces or chimneys; in some cases, simple geometric or letter carvings were used for these. When a wooden post was used to support a chimney opening, this was often an easier material for amateur carving. To discourage witchcraft, rowan wood may have been chosen for the post or mantel. [19]

6. History of timekeeping devices - Wikipedia

   en.wikipedia.org/wiki/History_of_timekeeping_devices

   In 1715, at the age of 22, John Harrison had used his carpentry skills to construct a wooden eight-day clock. [153] His clocks had innovations that included the use of wooden parts to remove the need for additional lubrication (and cleaning), rollers to reduce friction, a new kind of escapement , and the use of two different metals to reduce ...

7. Nanteos Cup - Wikipedia

   en.wikipedia.org/wiki/Nanteos_Cup

   The Nanteos Cup (Welsh: Cwpan Nanteos) is a medieval wood mazer bowl, held for many years at Nanteos Mansion, near Aberystwyth in Wales. [1]Since at least the late 19th century, it has been attributed with a supernatural ability to heal those who drink from it and traditionally believed to be fashioned from a piece of the True Cross. [2]