MOTS EN ANGLAIS EN RAPPORT AVEC «ICOSAHEDRA»
icosahedra
geometry
icosahedron
polyhedron
with
triangular
faces
edges
vertices
regular
identical
equilateral
often
meant
because
geometrical
significance
five
platonic
solids
meeting
each
vertex
represented
figure
also
schläfli
symbol
dual
icosahedra
dron
drons
eikosaedron
eikosi
wolfram
mathworld
constructed
origami
illustrated
above
gurkewitz
arnstein
this
construction
uses
triangle
edge
modules
made
fifty
nine
coxeter
shipping
qualifying
offers
originally
published
university
toronto
studies
mathematical
series
define
origin
eikosáedron
equivalent
eikosa
variant
combining
form
eíkosi
10 LIVRES EN ANGLAIS EN RAPPORT AVEC «ICOSAHEDRA»
Découvrez l'usage de
icosahedra dans la sélection bibliographique suivante. Des livres en rapport avec
icosahedra et de courts extraits de ceux-ci pour replacer dans son contexte son utilisation littéraire.
1
Cut and Assemble
Icosahedra: Twelve Models in White and Color
Fun, yet challenging shapes for hobbyists and useful tools for teachers of high school and college geometry, these 12 cut-and-assemble models offer complete step-by-step instructions and diagrams for assembly.
2
CRC Handbook of Thermoelectrics
Filling the internal bonding orbitals of boron-rich icosahedra requires 26
electrons.45 Thus, the stable state of the BnC icosahedra is negatively charged, (
BnC)". The twofold coordinated central boron atom in the CBC chain readily
ionizes, ...
3
Structure in Nature Is a Strategy for Design
There is a second system which also joins icosahedra on six of the thirty edges. lt
is somewhat more difficult to describe as the six edges in question do not
correspond to the cube planes (the (100) planes). They are approximately
parallel to ...
4
Physics of Non-Tetrahedrally Bonded Elements and Binary ...
Besides there are twelve equivalent orbitals (s-p hybrids) pointing outward in the
direction of the fivefold axes and leading to covalent bonds with other icosahedra
or structure elements. Because of the overlap of all radial orbitals within the ...
W. Freyland, A. Goltzene, P. Grosse, 1983
5
Structural Inorganic Chemistry
Since there would appear to be room for only 2 Si replacing 3 C there is
apparently some (statistical) replacement of B by Si in the icosahedra, giving a
composition close to Bush, (i.e. B3,Si5.Sig or B2,898i). Earlier work on 'B13P2'
suggested ...
Alexander Frank Wells, 2012
6
Electric Refractory Materials
This distortion of the icosahedra is quantitatively related to the anisotropy of the
change of the unit cell parameters depending on the carbon content. For boron
carbide it has been assumed that carbon atoms substitute for boron at the polar ...
7
Viral Molecular Machines
3.5 Different classes of icosahedra. The origin (H= 0, K =0) in the equilateral
triangular net represents the position of a fivefold vertex of an icosahedron, and
the position of the neighboring fivefold vertex in that icosahedron is represented
at a ...
Michael G. Rossmann, Venigalla B. Rao, 2012
8
Quasicrystals and Discrete Geometry
Let us restrict ourselves to a detailed analysis of the structure of the radial filling
model of the 512-module cavity with icosahedra rods, since the filling of twelve
remaining sectors of (64512)-module, corresponding to the pentagonal faces, ...
9
Visualization and Mathematics III
We generate our subsets, images of icosahedra (or refined icosahedra), with
vertices {vi, . . . ,v/v} by taking N ordered (pseudo) random points P = (m,...,; in the
4-cube Q4, N = 12 or N = 42. Then we count the number of self-intersections of Ip
...
Hans-Christian Hege, Konrad Polthier, 2003
10
Chemistry, Physics, and Materials Science of Thermoelectric ...
Many of the distinctive properties of icosahedral borides are consequences of the
unconventional bonding of boron icosahedra. Atoms within icosahedra
participate in both covalent bonding and "electron-deficient" bonding. A single
covalent ...
M.G. Kanatzidis, S.D. Mahanti, T.P. Hogan, 2003
10 ACTUALITÉS CONTENANT LE TERME «ICOSAHEDRA»
Découvrez de quoi on parle dans les médias nationaux et internationaux et comment le terme
icosahedra est employé dans le contexte des actualités suivantes.
New nanocatalyst does more with less platinum
In a paper published July 2, 2015 in the journal Nature Communications ("Palladium–platinum core-shell icosahedra with substantially ... «Nanowerk, juil 15»
X-ray pulses uncover free nanoparticles for the first time in 3-D
X-ray diffraction image of a icosahedra nanoparticle with 240nm diameter. Credit: Hannes Hartmann/Universität Rostock. In their experiment ... «Phys.Org, févr 15»
Is Glass a Liquid or Solid? Scientists Glean an Answer
Atoms in the solid regions organize themselves into fixed geometrical shapes, such as icosahedra, something that was predicted 60 years ago ... «Tech Times, janv 15»
Is glass a solid or a liquid?
Simultaneously the groups of solid-like molecules organise into arrangements of icosahedra – one of the five Platonic solids – predicted by ... «The Conversation UK, janv 15»
Is Glass Solid Or Liquid?
"We found that the size of the solid regions of icosahedra would grow until eventually there would be no more liquid regions and so the glass ... «Design & Trend, janv 15»
Scientists Shatter An Old Myth About Glass
... of the solid regions of icosahedra would grow until eventually there would be no more liquid regions and so the glass should be a true solid.". «GOOD Magazine, janv 15»
Scientists weigh in on whether glass is a 'true solid'
In other words, the solid regions of glass's makeup -- collections of atoms that form into an icosahedra, a polyhedron with 20 faces -- keep ... «UPI.com, janv 15»
World's most complex crystal simulated
But it is forbidden in a conventional crystal. Like trying to tile a bathroom floor with pentagons, icosahedra do not nicely fill space, said Michael ... «Phys.Org, déc 14»
World's most complex crystal simulated at U-Michigan
But it is forbidden in a conventional crystal. Like trying to tile a bathroom floor with pentagons, icosahedra do not nicely fill space, said Michael ... «ScienceBlog.com, déc 14»
These Things Are So Pretty. They Must Be Useful, Too. Right?
The shapes "can't be combined to form repeating structures," Pearce said. Like the forms called icosahedra, the Goldberg polyhedra might lead ... «Bloomberg, mars 14»
