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Imigongo (Kinyarwanda: [i.mí.ɡôː.ŋɡo]) is an art form popular in Rwanda traditionally made by women using cow dung.Often in the colors black, white and red, popular themes include spiral and geometric designs that are painted on walls, pottery, and canvas.
The familiar "brick wall" tiling is not edge-to-edge because the long side of each rectangular brick is shared with two bordering bricks. [ 18 ] A normal tiling is a tessellation for which every tile is topologically equivalent to a disk , the intersection of any two tiles is a connected set or the empty set , and all tiles are uniformly bounded .
Mathematically, the gradient of a two-variable function (here the image intensity function) at each image point is a 2D vector with the components given by the derivatives in the horizontal and vertical directions. At each image point, the gradient vector points in the direction of largest possible intensity increase, and the length of the ...
A brick is a type of construction material used to build walls, pavements and other elements in masonry construction. Properly, the term brick denotes a unit primarily composed of clay , but is now also used informally to denote units made of other materials or other chemically cured construction blocks.
Cyclopean masonry, backside of the Lion Gate, Mycenae, Greece. Cyclopean masonry is a type of stonework found in Mycenaean architecture, built with massive limestone boulders, roughly fitted together with minimal clearance between adjacent stones and with clay mortar or [1] no use of mortar.
Glass brick, also known as glass block, is an architectural element made from glass. The appearance of glass blocks can vary in color, size, texture and form. The appearance of glass blocks can vary in color, size, texture and form.
Fly ash bricks. Fly ash brick (FAB) is a building material, specifically masonry units, containing class C or class F fly ash and water. Compressed at 28 MPa (272 atm) and cured for 24 hours in a 66 °C steam bath, then toughened with an air entrainment agent, the bricks can last for more than 100 freeze-thaw cycles.
Tomb towers of two Seljuk princes at Kharaghan, Qazvin province, Iran, covered with many different brick patterns like those that inspired Ahmad Rafsanjani to create auxetic materials Computer graphics and computer-aided manufacturing make it possible to design and produce Islamic geometric patterns effectively and economically.