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Jack (geometry)

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In geometry, a jack is a 3D cross shape consisting of three orthogonal ellipsoids.[1] Sometimes four small spheres are added to the ends of two ellipsoids, to more closely resemble a playing piece from the game of jacks.[2][3] Sometimes any 3D cross shape, consisting of cylinders, boxes or lines instead of ellipsoids, are also included.[4][5][6]

See also

  • Knucklebones

References

  1. ↑ Dharmin, Desai (2021). "Efficient optimization of R50% when planning multiple cranial metastases simultaneously in single isocenter SRS/SRT" (in en). Journal of Applied Clinical Medical Physics (JACMP) 22 (6): 71–82. doi:10.1002/acm2.13254. PMID 33960619. 
  2. ↑ Jules, Bloomenthal (1994). "An Implicit Surface Polygonizer" (in en). Graphics Gems. Elsevier. pp. 324–349. doi:10.1016/B978-0-12-336156-1.50040-9. ISBN 9780123361561. https://www.semanticscholar.org/paper/An-Implicit-Surface-Polygonizer-Bloomenthal/f192ddb4ddb615bbf1461214b527cb3e0464ae29. Retrieved 9 July 2022. 
  3. ↑ Adrian, Hilton (1997). "Marching Triangles Delaunay Implicit Surface" (in en). https://www.semanticscholar.org/paper/Marching-Triangles-%3A-Delaunay-Implicit-Surface-TriangulationA-Hilton/5465cb71fa9d2bf79ee4bcbde1fe4b673ab012a4. Retrieved 9 July 2022. 
  4. ↑ Matt, Petersen (2010). "Shear rheology of extended nanoparticles" (in en). Physical Review E (American Physical Society) 82 (1 Pt 1): 010201. doi:10.1103/PhysRevE.82.010201. PMID 20866552. Bibcode: 2010PhRvE..82a0201P. https://journals.aps.org/pre/abstract/10.1103/PhysRevE.82.010201. Retrieved 9 July 2022. 
  5. ↑ "Cubit Reference Manual" (in en). https://coreform.com/manuals/latest/cubit_reference/cubit-workflows.html. Retrieved 9 July 2022. 
  6. ↑ Thomas, Nummy (2018). "Measurement of the atomic orbital composition of the near-fermi-level electronic states in the lanthanum monopnictides LaBi, LaSb, and LaAs" (in en). npj Quantum Materials (Nature) 3: 24. doi:10.1038/s41535-018-0094-3. Bibcode: 2018npjQM...3...24N. https://www.nature.com/articles/s41535-018-0094-3. Retrieved 9 July 2022. 





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