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Ruby ring. A ring is a round band, usually made of metal, worn as ornamental jewelry.The term "ring" by itself denotes jewellery worn on the finger; when worn as an ornament elsewhere, the body part is specified within the term, e.g., earrings, neck rings, arm rings, and toe rings.
A ring system is a disc or torus orbiting an astronomical object that is composed of solid material such as gas, dust, meteoroids, planetoids or moonlets and stellar objects. Ring systems are best known as planetary rings, common components of satellite systems around giant planets such as of Saturn , or circumplanetary disks .
A thumb ring is a ring meant to be worn on one's thumb. Most commonly, thumb rings are used as an archery equipment designed to protect the thumb pulp from the bowstring during a thumb draw , and are made of leather, stone , horn , wood , bone , antler , ivory , metal , ceramics , plastic or glass .
Crossword-like puzzles, for example Double Diamond Puzzles, appeared in the magazine St. Nicholas, published since 1873. [32] Another crossword puzzle appeared on September 14, 1890, in the Italian magazine Il Secolo Illustrato della Domenica. It was designed by Giuseppe Airoldi and titled "Per passare il tempo" ("To pass the time"). Airoldi's ...
The diameter of the ring is 15 shaku (4.55 meters), [1] which increased from 13 shaku (3.94 meters) in 1931. [4] The rice-straw bales ( tawara (俵)) which form the ring are one third standard size and are partially buried in the clay of the dohyō .
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Ring rolling is a specialized type of hot rolling that increases the diameter of a ring. The starting material is a thick-walled ring. This workpiece is placed between two rolls, an inner idler roll and a driven roll, which presses the ring from the outside. As the rolling occurs the wall thickness decreases as the diameter increases.
One common method for synthesizing nanorings involves first synthesizing nanobelts or nanowires with an uneven charge distribution focused on the edges of the material. If these criteria are met, these particles may naturally self-assemble into ring structures such that Coulomb repulsion forces are minimized within the resulting crystal. [10]