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  2. Triply periodic minimal surface - Wikipedia

    en.wikipedia.org/wiki/Triply_periodic_minimal...

    Numerous examples are known with cubic, tetragonal, rhombohedral, and orthorhombic symmetries. Monoclinic and triclinic examples are certain to exist, but have proven hard to parametrise. [1] TPMS are of relevance in natural science. TPMS have been observed as biological membranes, [2] as block copolymers, [3] equipotential surfaces in crystals ...

  3. Crystal system - Wikipedia

    en.wikipedia.org/wiki/Crystal_system

    The diamond crystal structure belongs to the face-centered cubic lattice, with a repeated two-atom pattern.. In crystallography, a crystal system is a set of point groups (a group of geometric symmetries with at least one fixed point).

  4. Rhombohedron - Wikipedia

    en.wikipedia.org/wiki/Rhombohedron

    It can be used to define the rhombohedral lattice system, a honeycomb with rhombohedral cells. A rhombohedron has two opposite apices at which all face angles are equal; a prolate rhombohedron has this common angle acute, and an oblate rhombohedron has an obtuse angle at these vertices.

  5. Crystal structure - Wikipedia

    en.wikipedia.org/wiki/Crystal_structure

    Crystal structure of table salt (sodium in purple, chlorine in green). In crystallography, crystal structure is a description of ordered arrangement of atoms, ions, or molecules in a crystalline material. [1]

  6. All the allegations in Blake Lively's complaint: Unwanted ...

    www.aol.com/allegations-blake-livelys-complaint...

    What are the sexual harassment allegations Blake Lively has made against co-star Justin Baldoni? In a meeting on Jan. 4, the complaint says that Lively and her team discussed in detail behavior by ...

  7. Huge Israeli strikes methodically destroy Syria's military ...

    www.aol.com/huge-israeli-strikes-methodically...

    The targeting of Syria's military sites has also revealed deep neglect by Assad. Years of corruption and a decade of civil war had hollowed out the nation's armed forces, contributing to his ...

  8. Periodic table (crystal structure) - Wikipedia

    en.wikipedia.org/wiki/Periodic_table_(crystal...

    Rhombohedral: R 3 m (No. 166) 105 (rh.) 315 (hex.) Partly due to its complexity, whether this structure is the ground state of Boron has not been fully settled. α-As: A7: Rhombohedral: R 3 m (No. 166) 2 (rh.) 6 (hex.) in grey metallic form, each As atom has 3 neighbours in the same sheet at 251.7pm; 3 in adjacent sheet at 312.0 pm. [18]

  9. Man, 20, Found Dead at Bottom of Elevator Shaft During First ...

    www.aol.com/man-20-found-dead-bottom-160430887.html

    The family of a 20-year-old man is speaking out after he was found dead at the bottom of a hotel elevator shaft in Turkey while reportedly on his first vacation with his girlfriend.