W28
W28 may refer to: * Excavated dodecahedron * Jiwarli dialect * Sequim Valley Airport, in Clallam County, Washington, United States * W28 (nuclear warhead) W28 may refer to: * Excavated dodecahedron In geometry, the excavated dodecahedron is a star polyhedron that looks like a regular dodecahedron, dodecahedron with concave pentagonal pyramids in place of its faces. Its exterior surface represents th ...

Sequim Valley Airport
Sequim Valley Airport is a privately owned, public use airport located four nautical miles (5  mi, 7  km) northwest of the central business district of Sequim, a city in Clallam County, Washington, United States. History During 2022, a website named Barnstormers.com listed the airport as "being for sale" with an asking price of $4,750,000 US dollars. Facilities and aircraft Sequim Valley Airport covers an area of 150 acres (61 ha) at an elevation of 151 feet (46 m) above mean sea level. It has one runways: 9/27 is 3,508 by 40 feet (1,069 x 12 m) with an asphalt surface. For the 12-month period ending December 31, 2022, the airport had 8,310 aircraft operations, an average of 23 per day, 98% general aviation, <1% , and <1% military. At that time there were 30 aircraft based at this airport: 28 single-

Jiwarli Dialect
Jiwarli (also spelt Djiwarli, Tjiwarli) is an Australian Aboriginal language formerly spoken in the Pilbara region of Western Australia Western Australia (WA) is the westernmost state of Australia. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to the south, the Northern Territory to the north-east, and South Australia to the south-east. Western Aust .... It is a variety of the Mantharta language of the large Pama–Nyungan family. The last native speaker of Jiwarli, Jack Butler, died in April 1986. Prof Peter K. Austin (Linguistics Department, SOAS) collected all the available material on Jiwarli during fieldwork with Jack Butler 1978–1985. He has published a volume of texts on the language and a bilingual dictionary (Jiwarli-English with English-Jiwarli finderlist); both are currently out of print. Phonology Vowels Consonants Phonotactics Word-initially, only non-apical stops, nasals and glides are allowed; that is, words may only ...
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Excavated Dodecahedron
In geometry, the excavated dodecahedron is a star polyhedron that looks like a regular dodecahedron, dodecahedron with concave pentagonal pyramids in place of its faces. Its exterior surface represents the The Fifty Nine Icosahedra, Ef1g1 stellation of the icosahedron. It appears in Magnus Wenninger's book ''Polyhedron Models'' as model 28, the ''third stellation of icosahedron''. Description All 20 vertices and 30 of its 60 edges belong to its regular dodecahedron, dodecahedral hull. The 30 other internal edges are longer and belong to a great stellated dodecahedron. (Each contains one of the 30 edges of the regular icosahedron, icosahedral core.) Each face is a List of self-intersecting polygons, self-intersecting hexagon with alternating long and short edges and 60° angles. The equilateral triangles touching a short edge are part of the face. (The smaller one between the long edges is a face of the icosahedral core.) Faceting of the dodecahedron It has the same external for ...
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