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2. Swarovski - Wikipedia

   en.wikipedia.org/wiki/Swarovski

   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 ...

3. Water crystal gel - Wikipedia

   en.wikipedia.org/wiki/Water_crystal_gel

   Hydrated water gel, or water beads. Water crystal gel or water beads or gel beads is any gel which absorbs and contains a large amount of water.Water gel is usually in spherical form and composed of a water-absorbing superabsorbent polymer (SAP, also known as slush powder in dry form) such as a polyacrylamide (frequently sodium polyacrylate).

4. Rhinestone - Wikipedia

   en.wikipedia.org/wiki/Rhinestone

   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 A rhinestone, paste or diamante is a diamond simulant originally made from rock crystal but since the 19th century from crystal glass or polymers such as acrylic.

5. Piezoelectricity - Wikipedia

   en.wikipedia.org/wiki/Piezoelectricity

   The 10 polar (pyroelectric) crystal classes: 1, 2, m, mm2, 4, 4mm, 3, 3m, 6, 6mm. The other 10 piezoelectric crystal classes: 222, 4, 422, 4 2m, 32, 6, 622, 6 2m, 23, 4 3m. For polar crystals, for which P ≠ 0 holds without applying a mechanical load, the piezoelectric effect manifests itself by changing the magnitude or the direction of P or ...

6. Crystal structure - Wikipedia

   en.wikipedia.org/wiki/Crystal_structure

   Twenty of the 32 crystal classes are piezoelectric, and crystals belonging to one of these classes (point groups) display piezoelectricity. All piezoelectric classes lack inversion symmetry . Any material develops a dielectric polarization when an electric field is applied, but a substance that has such a natural charge separation even in the ...

7. Bicone - Wikipedia

   en.wikipedia.org/wiki/Bicone

   In geometry, a bicone or dicone (from Latin: bi-, and Greek: di-, both meaning "two") is the three-dimensional surface of revolution of a rhombus around one of its axes of symmetry. Equivalently, a bicone is the surface created by joining two congruent, right, circular cones at their bases. A bicone has circular symmetry and orthogonal ...