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If the concentration of Y 2 O 3 is between 2.5-5% the resulting product will be PSZ (partially stabilized zirconia) while monophasic cubic crystals will form from around 8-40%. Below 14% at low growth rates tend to be opaque indicating partial phase separation in the solid solution (likely due to diffusion in the crystals remaining in the high ...
Swarovski (/ s w ɒ ˈ r ɒ f s k i /, German: [svaˈrɔfski] ⓘ) is an Austrian producer of glass based in Wattens in the Tyrol.It was founded in 1895 by Daniel Swarovski.. The company is split into three major industry areas: the Swarovski Crystal Business, which primarily produces crystal glass, jewelry, rhinestone, watches and accessories; Swarovski Optik, which produces optical ...
Twinning is a phenomenon somewhere between a crystallographic defect and a grain boundary. Like a grain boundary, a twin boundary has different crystal orientations on its two sides. But unlike a grain boundary, the orientations are not random, but related in a specific, mirror-image way. Mosaicity is a spread of crystal plane orientations.
A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualisation of all 118 elements is the periodic table of the elements , whose history along the principles of the periodic law was one of the founding ...
An international committee decided in 1992 that the Berkeley and Dubna laboratories should share credit for the discovery. An element naming controversy erupted and as a result IUPAC adopted unnilhexium (Unh) as a temporary systematic element name. In 1994, a committee of IUPAC adopted a rule that no element can be named after a living person. [15]
In the hexagonal family, the crystal is conventionally described by a right rhombic prism unit cell with two equal axes (a by a), an included angle of 120° (γ) and a height (c, which can be different from a) perpendicular to the two base axes.
Wall Street analysts expect gold's rally to keep going in 2025 after the precious metal saw its biggest annual jump in 14 years. On Thursday, gold futures jumped more than 1% to hover above $2,670 ...
Historic rhinestone copy of the Florentine Diamond, made in 1865 in Paris by the L. Saemann company [1] Rhinestones on a tiara Rowenta enamel rhinestone compact. A rhinestone, paste or diamante is a diamond simulant originally made from rock crystal but since the 19th century from crystal glass or polymers such as acrylic.