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[5] [6] The material is a series of interconnected diamond nanorods, with diameters of between 5 and 20 nanometres and lengths of around 1 micrometre each. [ citation needed ] Nanodiamond aggregates ca. 1 mm in size also form in nature, from graphite upon meteoritic impact, such as that of the Popigai impact structure in Siberia, Russia.
Rings from the first 57 Super Bowls Joe Theismann's NFL rings (2006); his 1983 NFC Championship ring (left), and his 1982 Super Bowl XVII Championship ring (right). The Super Bowl ring is an award in the National Football League given to the team members of the winning team of the league's annual championship game, the Super Bowl.
In 2001, a diamond-like-structured c-BC 2 N was synthesized at pressures >18 GPa and temperatures >2,200 K by a direct solid-state phase transition of graphite-like (BN) 0.48 C 0.52. The reported Vickers and Knoop hardnesses were intermediate between diamond and c-BN, making the new phase the second hardest known material. [39]
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The diamond (black ball) is located between two graphite heaters Covalent superconductors are superconducting materials where the atoms are linked by covalent bonds . The first such material was boron-doped synthetic diamond grown by the high-pressure high-temperature (HPHT) method. [ 1 ]
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In 2011, a Super Bowl ring belonging to Steve Wright, a lineman for the Green Bay Packers in the 1960s, sold for over $73,000 at auction. Three Super Bowl rings belonging to former Raiders' great Ray Guy brought over $96,000 at auction. In 2012, Lawrence Taylor's son sold his father's 1990 Super Bowl ring for more than $250,000. [citation needed]
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