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  2. Penrose tiling - Wikipedia

    en.wikipedia.org/wiki/Penrose_tiling

    Penrose tiling. A Penrose tiling is an example of an aperiodic tiling. Here, a tiling is a covering of the plane by non-overlapping polygons or other shapes, and a tiling is aperiodic if it does not contain arbitrarily large periodic regions or patches. However, despite their lack of translational symmetry, Penrose tilings may have both ...

  3. Einstein problem - Wikipedia

    en.wikipedia.org/wiki/Einstein_problem

    Aperiodic tiling with "Tile(1,1)". The tiles are colored according to their rotational orientation modulo 60 degrees. [1] ( Smith, Myers, Kaplan, and Goodman-Strauss) In plane geometry, the einstein problem asks about the existence of a single prototile that by itself forms an aperiodic set of prototiles; that is, a shape that can tessellate space but only in a nonperiodic way.

  4. Glaze defects - Wikipedia

    en.wikipedia.org/wiki/Glaze_defects

    Crazing is a spider web pattern of cracks penetrating the glaze. It is caused by tensile stresses greater than the glaze is able to withstand. [1] [2] Common reasons for such stresses are: a mismatch between the thermal expansions of glaze and body; from moisture expansion of the body; and in the case of glazed tiles fixed to a wall, movement of the wall or of the bonding material used to fix ...

  5. Vitrified tile - Wikipedia

    en.wikipedia.org/wiki/Vitrified_tile

    Vitrified tile. Vitrified tile is a ceramic tile with very low porosity. [1] It is an alternative to marble and granite flooring. Vitrified tiles are often used outdoors due to their water and frost resistance. There are four types of Vitrified tiles - Soluble salt, Double charge, Full Body, and Glazed.

  6. Contemporary architecture - Wikipedia

    en.wikipedia.org/wiki/Contemporary_architecture

    Contemporary architecture is the architecture of the 21st century. No single style is dominant. [1] Contemporary architects work in several different styles, from postmodernism, high-tech architecture and new references and interpretations of traditional architecture [2] [3] to highly conceptual forms and designs, resembling sculpture on an enormous scale.

  7. Conservation issues of Pompeii and Herculaneum - Wikipedia

    en.wikipedia.org/wiki/Conservation_issues_of...

    Henri de Saint-Blanquat identifies thirty-one plants in Pompeii, which, after growing in patches of bare earth, grow outward and attack the surrounding buildings, as well as dislodging tiles and mosaics. In particular, ivy grows along the walls, making parts crumble, and the roots undermine the foundations of the buildings.

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