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Hippospongia communis also known as the honeycomb bath sponge, is a marine sponge in the phylum Porifera. Hippospongia communis is a brown or darker color [1] and very porous, due to its many oscules, and is commonly found in shallow waters of the Mediterranean. Throughout history, H. communis has been used for cleaning, medicine, and cooking ...
In geometry, the 8-cubic honeycomb or octeractic honeycomb is the only regular space-filling tessellation (or honeycomb) in Euclidean 8-space. It is analogous to the square tiling of the plane and to the cubic honeycomb of 3-space, and the tesseractic honeycomb of 4-space. There are many different Wythoff constructions of this honeycomb.
Honey bees consume about 8.4 lb (3.8 kg) of honey to secrete 1 lb (450 g) of wax, [1] and so beekeepers may return the wax to the hive after harvesting the honey to improve honey outputs. The structure of the comb may be left basically intact when honey is extracted from it by uncapping and spinning in a centrifugal honey extractor .
A plesiohedron is a broader class of three-dimensional space-filling polyhedra, formed from the Voronoi diagrams of periodic sets of points. [9] As Boris Delaunay proved in 1929, [ 14 ] every parallelohedron can be made into a plesiohedron by an affine transformation, [ 2 ] but this remains open in higher dimensions, [ 1 ] and in three ...
In the geometry of hyperbolic 3-space, the order-8-4 square honeycomb (or 4,8,4 honeycomb) a regular space-filling tessellation (or honeycomb) with Schläfli symbol {4,8,4}. All vertices are ultra-ideal (existing beyond the ideal boundary) with four order-5 square tilings existing around each edge and with an order-4 octagonal tiling vertex ...
In seven-dimensional Euclidean geometry, the quarter 8-cubic honeycomb is a uniform space-filling tessellation (or honeycomb). It has half the vertices of the 8-demicubic honeycomb, and a quarter of the vertices of a 8-cube honeycomb. [1] Its facets are 8-demicubes h{4,3 6}, pentic 8-cubes h 6 {4,3 6}, {3,3}×{3 2,1,1} and {3 1,1,1}×{3 1,1,1 ...
In eight-dimensional Euclidean geometry, the omnitruncated 8-simplex honeycomb is a space-filling tessellation (or honeycomb). It is composed entirely of omnitruncated 8-simplex facets. The facets of all omnitruncated simplectic honeycombs are called permutahedra and can be positioned in n+1 space with integral coordinates, permutations of the ...
The vertex arrangement of the 8-demicubic honeycomb is the D 8 lattice. [1] The 112 vertices of the rectified 8-orthoplex vertex figure of the 8-demicubic honeycomb reflect the kissing number 112 of this lattice. [2] The best known is 240, from the E 8 lattice and the 5 21 honeycomb.