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在以下的参考文献中发现
icosahedron的用法。与
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1
Lectures on the
Icosahedron and the Solution of the Fifth Degree
German mathematician FELIX KLEIN (1849-1925) specialized in function theory, group theory, and non-Euclidean geometry.
But more are now found in the case of the icosahedron. In the case of the
dodecahedron all three of its stellations turn out to be genuinely new polyhedra,
in fact they all classify as regular. The icosahedron has twenty faces and if all
twenty ...
Magnus J. Wenninger, 1974
3
Introduction to Group Theory
12 As as the rotation group of an icosahedron Let / be a fixed regular
icosahedron in the 3-dimensional Euclidean space (Figure 1 ) and let G be the
isometry group of this space, preserving orientation and mapping / to / . The
group G contains ...
Oleg Vladimirovič Bogopolʹskij, 2008
4
Paper Galaxy: Out-of-This-World Projects to Cut, Fold and Paste
To make the small icosahedron, copy the pattern to project paper, and cut out the
entire pattern, including the glue flaps. Fold on all solid lines. Flatten out again.
Cut out the inside dashed green triangles on all 20 faces by first poking a small ...
5
A Mathematical History of Division in Extreme and Mean Ratio
However, from VI,8 AB: BD = BD: BC and VI,17 tells us R(BC,AB) = S(BD).
THEOREM XIII,l4. Inscription of the octahedron. THEOREM XIII,15. Inscription of
the cube. S(D) = 3- S(e.,). THEOREM XIII,16[a]. To inscribe an icosahedron in a
sphere.
Roger Herz-Fischler, 1987
6
Polyhedra: A Visual Approach
Solving a Problem by Constructing Scale Drawings This example shows how the
edge lengths of a three-frequency icosahedron can be found by drawing
accurate sections through the figure. Each edge of the icosahedron in Diagram Al
.19 is ...
However, the icosahedron must sit in a skew (or twisted) position, with its vertices
intersecting the octahedral edges off center, dividing each edge into two
segments, the longer 1.618 times the length of the shorter. This asymmetry
means that ...
The icosahedron is one of the five platonic solids shown in Fig. 1.4. The
symmetry of these solids is generally referred to as cubic, but since most viruses
possess an icosahedral symmetry the latter term will be used throughout this
volume.
M.V. Nermut, A.C. Steven, 1987
9
Widespan Roof Structures
Like earlier predecessors our geodesic domes are based on the geometry of the
icosahedron, an element with 12 corners and 20 surfaces. Circles drawn through
two adjacent corners of the icosahedron result in 'Great Circles', because all ...
Michael Barnes, Michael Dickson, 2000
10
The Universal Book of Mathematics: From Abracadabra to ...
One of the first Europeans to see the hexagram structure when it was brought out
of China in the early 1700s was Gottfried Leibniz, the first mathematician to work
with base two, or binary, arithmetic. icosahedron A polyhedron with 20 faces.
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icosahedron在以下新条目的上下文中是如何使用的。
New nanocatalyst does more with less platinum
... of how a particular substance's reactivity changes depending on whether it's structured as an icosahedron, an octahedron or another shape. «Nanowerk, 七月 15»
Fueled by nanoparticles, new catalyst does more with less platinum
... of how a particular substance's reactivity changes depending on whether it's structured as an icosahedron, an octahedron or another shape. «University of Wisconsin-Madison, 七月 15»
How Physics Will Change—and Change the World—in 100 Years
... in space gives us just five distinct Platonic solids: the tetrahedron, cube, the octahedron, the icosahedron, and of course the dodecahedron. «NOVA Next, 六月 15»
3D Printed Human Artifacts are Being Sent to the Moon with Hopes …
Why an icosahedron? Because it is the nearest platonic geometry to a radiolorian (plankton) — the most basic life forms in the oceans who are ... «3DPrint.com, 六月 15»
WCCUSD educator invited to speak on White House 'makers' panel
... models and products. For example, below are videos showing how the district created a truncated icosahedron model using a 3-D printer. «Richmond Standard, 六月 15»
Temple of Elemental Evil Boardgame
Combat involves rolls of a 20-sided die (the icosahedron so familiar to old RPG players), where the player adds the die roll to the attack bonus ... «Paste Magazine, 六月 15»
SUNY Potsdam Math Alliance Unveils Campus Icosahedron …
The statue itself is an icosahedron, which is considered the greatest of the five Platonic solids. The sculpture has 20 equilateral triangle faces, ... «ReadMedia, 五月 15»
The Church Of George Church
It is also wrapped around a 20-sided die, or an icosahedron. “I found this die on the street,” he says. “I like it because it looks like the nuclear ... «Popular Science, 四月 15»
Carnegie Mellon chemists create tiny gold nanoparticles that reflect …
In the crystal structure, Zeng discovered that the gold core is in the shape of an icosahedron. At the interface between the core and the ... «Nanotechnology News, 四月 15»
Golf Ball 'swings into action' at city's multi-storey car park
The sphere, which is based on a truncated icosahedron, is aluminium-framed and glazed with dark tinted laminated glass.” Now, 40 years later, ... «Oxford Mail, 四月 15»
