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Native American jewelry refers to items of personal adornment, whether for personal use, sale or as art; examples of which include necklaces, earrings, bracelets, rings and pins, as well as ketohs, wampum, and labrets, made by one of the Indigenous peoples of the United States. Native American jewelry normally reflects the cultural diversity ...
Bellfounding. Bellfounding is the casting and tuning of large bronze bells in a foundry for use such as in churches, clock towers and public buildings, either to signify the time or an event, or as a musical carillon or chime. Large bells are made by casting bell metal in moulds designed for their intended musical pitches.
A ball bearing. A bearing is a machine element that constrains relative motion to only the desired motion and reduces friction between moving parts.The design of the bearing may, for example, provide for free linear movement of the moving part or for free rotation around a fixed axis; or, it may prevent a motion by controlling the vectors of normal forces that bear on the moving parts.
Sican tumi, or ceremonial knife, Peru, 850–1500 CE. Metallurgy in pre-Columbian America is the extraction, purification and alloying of metals and metal crafting by Indigenous peoples of the Americas prior to European contact in the late 15th century. Indigenous Americans had been using native metals from ancient times, with recent finds of ...
Metalsmith. A bladesmith from Damascus, c. 1900. A metalsmith or simply smith is a craftsperson fashioning useful items (for example, tools, kitchenware, tableware, jewelry, armor and weapons) out of various metals. [1] Smithing is one of the oldest metalworking occupations. Shaping metal with a hammer ( forging) is the archetypical component ...
Change ringing. Appearance. Peal board at St Peter and St Paul Church, Chatteris, Cambridgeshire, commemorating the ringing of a peal in 1910; 5,040 changes were rung in two hours and forty-nine minutes. Change ringing is the art of ringing a set of tuned bells in a tightly controlled manner to produce precise variations in their successive ...
Carved stone balls are petrospheres dated from the late Neolithic, to possibly as late as the Iron Age, mainly found in Scotland, but also elsewhere in Britain and Ireland. They are usually round and rarely oval, and of fairly uniform size at around 2 + 3 ⁄ 4 inches or 7 cm across, with anything between 3 and 160 protruding knobs on the surface.
Ringing rocks. A child strikes a rock with a hammer at Ringing Rocks Park, Pennsylvania, to generate a distinctive bell sound. Ringing rocks, also known as sonorous rocks or lithophonic rocks, are rocks that resonate like a bell when struck. Examples include the Musical Stones of Skiddaw in the English Lake District; the stones in Ringing Rocks ...