Mechanical ventilation: Difference between revisions

From formulasearchengine
Jump to navigation Jump to search
en>Twsx
m Reverted edits by 31.221.70.194 (talk): nonconstructive edits (HG)
en>BenLinus1214
 
(One intermediate revision by one other user not shown)
Line 1: Line 1:
{{Semireg polyhedra db|Semireg polyhedron stat table|tC}}
Shonda Scroggins is the people speak to me and additionally I cherish it. Software getting is where his number one income originates from. To play mentally stimulating games is your hobby he will at no time stop conducting. She's make sure to loved living in West Dakota furthermore her adults live surrounding. His wife and god maintain the new website. That you might decide to consult it out: http://wiki.geigw.de/index.php/Xbox_360_Emulator_-_Official_Free_Pcx360_Emulator_For_Pc<br><br>
In [[geometry]], the '''truncated cube''', or '''truncated hexahedron''', is an [[Archimedean solid]]. It has 14 regular faces (6 [[octagon]]al and 8 [[triangle (geometry)|triangular]]), 36 edges, and 24 vertices.


If the truncated cube has unit edge length, its dual [[triakis octahedron]] has edges of lengths 2 and <math>\scriptstyle {2+\sqrt{2}}</math>.
Have a look at my blog [http://wiki.geigw.de/index.php/Xbox_360_Emulator_-_Official_Free_Pcx360_Emulator_For_Pc xbox 360 emu]
 
==Area and volume==
The area ''A'' and the [[volume]] ''V'' of a truncated cube of edge length ''a'' are:
:<math>A = 2\left(6+6\sqrt{2}+\sqrt{3}\right)a^2 \approx 32.4346644a^2</math>
:<math>V = \frac{1}{3}\left(21+14\sqrt{2}\right)a^3 \approx 13.5996633a^3.</math>
 
==Orthogonal projections==
The ''truncated cube'' has five special [[orthogonal projection]]s, centered, on a vertex, on two types of edges, and two types of faces: triangles, and octagons. The last two correspond to the B<sub>2</sub> and A<sub>2</sub> [[Coxeter plane]]s.
{|class=wikitable width=640
|+ Orthogonal projections
|-
!Centered by
!Vertex
!Edge<br>3-8
!Edge<br>8-8
!Face<br>Octagon
!Face<br>Triangle
|-
!Truncated<BR>cube
|[[File:Cube t01 v.png|100px]]
|[[File:Cube t01 e38.png|100px]]
|[[File:Cube t01 e88.png|100px]]
|[[File:3-cube t01_B2.svg|100px]]
|[[File:3-cube t01.svg|100px]]
|-
![[Triakis octahedron|Triakis<BR>octahedron]]
|[[File:Dual truncated cube t01 v.png|100px]]
|[[File:Dual truncated cube t01 e8.png|100px]]
|[[File:Dual truncated cube t01 e88.png|100px]]
|[[File:Dual truncated cube t01_B2.png|100px]]
|[[File:Dual truncated cube t01.png|100px]]
|- align=center
!Projective<BR>symmetry
|[2]
|[2]
|[2]
|[4]
|[6]
|}
 
==Cartesian coordinates==
 
The following [[Cartesian coordinates]] define the vertices of a [[Truncation (geometry)|truncated]] [[hexahedron]] centered at the origin with edge length 2ξ:
:(±ξ, ±1, ±1),
:(±1, ±ξ, ±1),
:(±1, ±1, ±ξ)
where ξ = <math>\scriptstyle {\sqrt2 - 1}</math>
 
== Vertex arrangement==
It shares the [[vertex arrangement]] with three [[nonconvex uniform polyhedra]]:
{|class="wikitable" width="400" style="vertical-align:top;text-align:center"
|[[Image:Truncated hexahedron.png|100px]]<br>Truncated cube
|[[Image:Uniform great rhombicuboctahedron.png|100px]]<br>[[Nonconvex great rhombicuboctahedron]]
|[[Image:Great cubicuboctahedron.png|100px]]<br>[[Great cubicuboctahedron]]
|[[Image:Great rhombihexahedron.png|100px]]<br>[[Great rhombihexahedron]]
|}
 
==Related polyhedra==
The truncated cube is one of a family of uniform polyhedra related to the cube and regular octahedron.
 
{{Octahedral truncations}}
 
This polyhedron is topologically related as a part of sequence of uniform [[Truncation (geometry)|truncated]] polyhedra with [[vertex configuration]]s (3.2n.2n), and [n,3] [[Coxeter group]] symmetry.
{{Truncated figure1 table}}
 
It is topologically related to a series of polyhedra and tilings with [[face configuration]] V''n''.6.6.
{{Truncated figure4 table}}
 
=== Alternated truncation===
 
A cube can be [[Alternation (geometry)|alternately]] truncated producing [[tetrahedral symmetry]], with six hexagonal faces, and four triangles at the truncated vertices. It is one of a sequence of [[Truncated rhombic dodecahedron#related polyhedra|alternate truncations of polyhedra and tiling]].
 
:[[File:Alternate_truncated_cube.png|100px]]
 
== Related polytopes ==
The ''[[Truncation (geometry)|truncated]] [[cube]]'', is second in a sequence of truncated [[hypercube]]s:
{{Truncated hypercube polytopes}}
 
==See also==
*[[:Image:Truncatedhexahedron.gif|Spinning truncated cube]]
*[[Cube-connected cycles]], a family of graphs that includes the [[skeleton (topology)|skeleton]] of the truncated cube
 
==References==
*{{The Geometrical Foundation of Natural Structure (book)}} (Section 3-9)
* Cromwell, P. ''Polyhedra'', CUP hbk (1997), pbk. (1999). Ch.2 p.79-86 ''Archimedean solids''
 
==External links==
*{{mathworld2 |urlname=TruncatedCube |title=Truncated cube |urlname2=ArchimedeanSolid |title2=Archimedean solid}}
*{{KlitzingPolytopes|polyhedra.htm|3D convex uniform polyhedra|o3x4x - tic}}
*[http://www.dr-mikes-math-games-for-kids.com/polyhedral-nets.html?net=621wh65c7Ey8v4cRpEVhGs0pPxZ5raM9uNf8HcBUgOyrp6acSwZGvkvEcL6m06RDKxmSAduYsvTvoCvEDokvHrjyVEqlGVdIH8WamnxFO1qnGpUtgt7K0ZD57RlX&name=Truncated+Cube#applet Editable printable net of a truncated cube with interactive 3D view]
*[http://www.mathconsult.ch/showroom/unipoly/ The Uniform Polyhedra]
*[http://www.georgehart.com/virtual-polyhedra/vp.html Virtual Reality Polyhedra] www.georgehart.com: The Encyclopedia of Polyhedra
**[[VRML]] [http://www.georgehart.com/virtual-polyhedra/vrml/truncated_cube.wrl model]
**[http://www.georgehart.com/virtual-polyhedra/conway_notation.html Conway Notation for Polyhedra] Try: "tC"
 
{{Archimedean solids}}
{{Polyhedron navigator}}
{{Polyhedron-stub}}
 
[[Category:Uniform polyhedra]]
[[Category:Archimedean solids]]

Latest revision as of 20:04, 11 January 2015

Shonda Scroggins is the people speak to me and additionally I cherish it. Software getting is where his number one income originates from. To play mentally stimulating games is your hobby he will at no time stop conducting. She's make sure to loved living in West Dakota furthermore her adults live surrounding. His wife and god maintain the new website. That you might decide to consult it out: http://wiki.geigw.de/index.php/Xbox_360_Emulator_-_Official_Free_Pcx360_Emulator_For_Pc

Have a look at my blog xbox 360 emu