Geometría
View allAll Photos Tagged Tetraedro
For today's theme, I wanted to create this spectacular set of dice with multifaceted shapes, used for role-playing games, highlighting the number "3", which for Pythagorean philosophers was considered the perfect number. It was also used as a symbolic function by poets. For example, in the epic poem Divine Comedy by the great Dante Alighieri, the number "3" emerges as a symbol of structural and allusive perfection.
Per il tema di oggi ho voluto creare questo scenografico set di dadi dalle forme poliedriche, usati per i giochi di ruolo. Ho evidenziato il numero "3", che per i filosofi pitagorici, e non solo, era considerato il numero perfetto e che spesso assume una funzione simbolica per poeti come Dante che nella Divina Commedia allude al TRE come al simbolo della perfezione strutturale.
Pour le thème d'aujourd'hui, je voulais créer cet ensemble spectaculaire de dés à multiples facettes, utilisés pour les jeux de rôle, mettant en évidence le chiffre « 3 » , qui pour les philosophes pythagoriciens était considéré comme le numéro parfait. Il était également, utilisé comme fonction symbolique par des poètes. Par exemple, dans la Divine Comédie du grand Dante Alighieri, le chiffre «3» apparaît comme un symbole de perfection structurelle et allusive.
Tetrahedron
Tétraèdre
Tetraedro
Tetràedre
regelmatig viervlak tetraëder
Tetraedru
The Tetrahedron is located in Bottrop,Germany,on top of the mine dump and serves as the town's landmark.
It was opened on German Unity Day 3 October 1995.
It's a walkable steel structure in the form of a tetrahedron with a side length of 60m, resting on four 9m tall concrete pillars.
Cuando vi los de Sonia me quedé prendado de ellos, y resulta que ya tenía yo el esquema, qué memoria la mía, si es que son tantos que uno ya no lleva la cuenta..... jajajaja ^_^
Si quereis ver lo bien que le quedaron a Sonia los suyos podeis hacerlo aquí www.flickr.com/photos/sonia_bijoux/2239186101/in/set-7215...
Five Intersecting Tetrahedra
AKA Compound of Five Tetrahedra
Paper model folded by Arturo Pascalin.
Engineered by Tom Hull using modules by Francis Ow.
This is a complex model to assemble
Nombre: Tetraedro
Video tutorial: youtu.be/LyrP0o_PU3c
Unidades: 6 cuadrados
Diseñador: Adaptación módulo Tomoko Fuse
origamiymatematicas.blogspot.com/
@jaimeninob
#Origami #tetraedro #tetraedroorigami #Origamimodular #Kusudamatutorial #Sólidosorigami #Poliedroregulares #Sólidosplatónicos
#Kusudama #Kusudamaorigami #modularorigami #origamiart #origamiartist #unitorigami #origami #paperfolding #paperart #papercraft #paperball #origamiball #kusudamaball #折り紙 #ユニット折り紙 #くす玉 #оригами #кусудама #พับกระดาษ
Name: 5 tetraedros intersectados
Designer: Nicolás Gajardo Henríquez
Units: 60
Paper: 5,0 х 10,0
Final height: ~ 12,5 cm
Diagram: novalecortar.blogspot.com/2008/09/mdulo-mdulo-mdulo-mdulo...
www.flickr.com/photos/novalecortar/3927603693/in/faves-64...
Nombre: Tetraedro
Video Tutorial: www.youtube.com/watch?v=0mZVFK9rFf0
Diseñador: Jaime Niño Bernal
origamiymatematicas.blogspot.com/
Unidades: 6 rectángulos 5 cm x 10 cm
@jaimeninob
#Tetraedroorigami #TetrahedronOrigami #Origami #Origamimodular #Origami #Sólidosorigami #Poliedroregulares #Origamimodular
#Kusudama #Kusudamaorigami #kusudama #modularorigami #origamiart #origamiartist #unitorigami #origami #paperfolding #paperart #papercraft #paperball #origamiball #kusudamaball #折り紙 #ユニット折り紙 #くす玉 #оригами #кусудама #พับกระดาษ
Nombre: tetraedro truncado
Video tutorial: youtu.be/UA0DChAPOAw
Diseñador: Jaime Niño Bernal
Unidades: 24 Cuadrados
@jaimeninob
origamiymatematicas.blogspot.com/
#Origami #tetraedrotruncado #tetraedroorigami #Origamimodular #Kusudamatutorial #Sólidosorigami #cuboorigami #Poliedrosemiregulares #Sólidosdearquimedes #Kusudama #Kusudamaorigami #modularorigami #origamiart #origamiartist #unitorigami #origami #paperfolding #paperart #papercraft #paperball #origamiball #kusudamaball #折り紙 #ユニット折り紙 #くす玉 #оригами #кусудама #พับกระดาษ
Módulo creado por mi
3 de los 5 sólidos platónicos
Izquierda: Octaedro 4 módulos
Centro: Icosaedro 10 módulos
Derecha: Tetraedro 2 módulos
Nombre: Deltaedros Regulares
Proporción del papel: 2:1
Icosaedro, 10 unidades 5 izquierdas, 5 derechas
Octaedro, 4 unidades derecha
Tetraedro, 2 unidades. 1 izquierda, 1 derecha
Video tutorial: www.youtube.com/watch?v=-Fuf91fwZM4 (no corresponde a es este módulo, pero puedes construir estos sólidos)
Diseñador: Jaime Niño Bernal
origamiymatematicas.blogspot.com/
@jaimeninob
#Icosaedroorigami #IcosahedronOrigami #Origami #Origamimodular #Kusudamatutorial #Sólidosorigami #Poliedroregulares #Sólidos platónicos
#Kusudama #Kusudamaorigami #modularorigami #origamiart #origamiartist #unitorigami #origami #paperfolding #paperart #papercraft #paperball #origamiball #kusudamaball #折り紙 #ユニット折り紙 #くす玉 #оригами #кусудама #พับกระดาษ
Nombre: Deltaedros
Azul: Icosaedro, 10 unidades 5 izquierdas, 5 derechas
Rojo: Bipirámide cuadrada giroelongada, 8 unidades, 4 izquierdas, 4 derechas
Verde: Octaedro, 4 unidades derecha
Azul: Tetraedro, 2 unidades. 1 izquierda, 1 derecha
Video tutorial: www.youtube.com/watch?v=-Fuf91fwZM4
Diseñador: Jaime Niño Bernal
origamiymatematicas.blogspot.com/
@jaimeninob
#Icosaedroorigami #IcosahedronOrigami #Origami #Origamimodular #Kusudamatutorial #Sólidosorigami #Poliedroregulares #Sólidos platónicos
#Kusudama #Kusudamaorigami #modularorigami #origamiart #origamiartist #unitorigami #origami #paperfolding #paperart #papercraft #paperball #origamiball #kusudamaball #折り紙 #ユニット折り紙 #くす玉 #оригами #кусудама #พับกระดาษ
Video tutorial: youtu.be/t1uePHnCobs después del 6/05/2021
Diseñador: Trimodule Nick Robinson
origamiymatematicas.blogspot.com/
Unidades:
Icosaedro: 10 cuadrados
Octaedro: 4 cuadrados
Tetraedro: 2 Cuadrados
@jaimeninob
#Icosaedroorigami #IcosahedronOrigami #Origami #Origamimodular #Tetraedro # Octaedro #Kusudamatutorial #Sólidosorigami #Poliedroregulares #Sólidos platónicos
#Kusudama #Kusudamaorigami #modularorigami #origamiart #origamiartist #unitorigami #origami #paperfolding #paperart #papercraft #paperball #origamiball #kusudamaball #折り紙 #ユニット折り紙 #くす玉 #оригами #кусудама #พับกระดาษ
First thing: when I was a child, the milk was sold in the form of a pretty tetrahedron called tetrapack. Today, however, is sold in a package that is a parallelepiped shape called tetrabrick but everybody still call tetrapack. I loved that package and I am convinced that my passion for the tetrahedron is from there.
Second thing: I received as a Christamas gift the interesting book by Sundara Rao "Geometric exercises in paper folding"; it is a book of 1853 which, according to the author, is inspired by Froebel, and in particular by the Gift n. VIII "Paperfolding" ... in fact these gifts of Froebel are not always the same ... now the number 8 is a different thing, however, no one doubts that Froebel gifted children of paper folding. I would suggest, in this case, to trust on this fine article by David Lister.
Third thing: yesterday, not knowing what to suggest to the kids, after being gone too, with great risk, to skate on ice ... I got into my head to make chocolate muffins ... and eat a fair amount, stuff not to be swallowed by an elephant.
Fourth thing: to my Christmas dinner, I used these fine Muji bags for packing gifts for my guests.They are flat envelopes that, when filled, turn into a tetrahedron, and one can also hang them to the tree as a decoration. No more on Muji production but I still have a discrete amount.
This was last night before going to sleep... I started to read this Sundara Rao's book, chapter one, on the square nothing to say, if not some pretty ideas for my students, which, however (don't worry guys), I have already forgotten. Chapter two, the triangle ... the triangle ... I started the text looked at the picture (a flattened square of paper pre-folded into regular triangles) ... all those muffins, stomach pain, I recalled my grandmother and the tetrapack and I felt asleep. I woke up around four a.m. with this thing in mind ...unbelievable, I have seen it in my own mind! It was so clear! It was so terribly simple! Beautiful! So simple that surely many someones have folded before me ... Sundara Rao at least, I feel, did... so I guess I might consider it a traditional model... but here it is: my bag in the shape of a tetrahedron from a single square sheet, and of course can be opened simply pushing two corners with two fingers.
When folding, I could see there was left out of the group of triangles, this strip ... here is the problem ... I thought... then the second light ... Jaime Lerner, who, I know, for some, is a discussed character, but I always liked his quote "... I realized that the city was not the problem ... the city was the solution!" here it was ... the strip was not the problem, the strip was the solution ... it can be used as a lock! The box is beautiful, opens with two fingers ... In short: I'm so proud.
Sooner or later, a CP or diagram will come, by now I wish you all the time, that your problem may be your solution!
Nombre: Sólidos Platónicos
Video Tutorial: youtu.be/UTZFGFMiPqk
Con este modulo puedes construir todos los poliedro regulares y los poliedros semirregulares que tengan máximo caras hexagonales
Unidades:
Dodecaedro: 30 Cuadrados
Icosaedro: 30 Cuadrados
Cubo: 12 cuadrados
Octaedro: 12 Cuadrados
Tetraedro: 6 cuadrados
Diseñador: Jaime Niño Bernal
origamiymatematicas.blogspot.com/
@jaimeninob
#cuboorigami #OrigamiCube #Octaedroorigami #OctahedronOrigami #Dodecaedroorigami #Dodecaedro #Tetraedroorigami #TetrahedronOrigami #Icosaedroorigami #IcosahedronOrigami #Origami #Origamimodular #Origami #Sólidosorigami #Poliedroregulares #Origamimodular #Sólidos platónicos
#Kusudama #Kusudamaorigami #kusudama #modularorigami #origamiart #origamiartist #unitorigami #origami #paperfolding #paperart #papercraft #paperball #origamiball #kusudamaball #折り紙 #ユニット折り紙 #くす玉 #оригами #кусудама #พับกระดาษ
Nombre: Tetraedro regular
Video tutorial: youtu.be/5b3SyAD4N6o
Diseñador. Jaime Niño Bernal
Unidades: 3 hojas cuadradas
@jaimeninob
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#Origami #Origamimodular #Kusudamatutorial #Sólidosorigami #cuboorigami #Poliedroregulares #Sólidosplatónicos #Kusudama #Kusudamaorigami #modularorigami #origamiart #origamiartist #unitorigami #origami #paperfolding #paperart #papercraft #paperball #origamiball #kusudamaball #折り紙 #ユニット折り紙 #くす玉 #оригами #кусудама
"The Partial Platonics" ...a series of 5 polyhedra sculptures I did.
I used the original tablesaw jigs and fixtures that made one of the normal 9" Tetrahedrons (right). I cut identical compound miters on 4 pieces of wood then made the partial tetrahedron sculpture on the left. I tried to orient them as best as I could for the photo so you can see the 1-1 relationship they have. The compound angles are very precise so it holds its shape on its own.
Any which way you turn this piece it always looks the same!
La pianta di rosmarino per l'omeopatia ha proprietàterapeutiche, curative aromatizzanti, aperitive, digestive, antispasmodiche, diuretiche, balsamiche, antisettiche e stimolanti ed in campo cosmetico, grazie alle sue proprietà toniche e di stimolatore per la circolazione, vene utilizzato per la preparazione di detergenti, creme, dentifrici, colluttori e per risciacquare i capelli.
Curiosità
il Tribulus terrestris divenne famoso nella metà degli anni novanta nel Nord America, dopo che gli atleti olimpionici dell’est europeo confessarono di averla utilizzata per migliore le loro prestazioni atletiche, di base. Ii composti attivi del tribulus terrestris si chiamano saponine steroidee e si trovano principalmente nelle sue parti aeree mentre i glicosidi furistanol e lo sprirostanol (due delle suddette composizioni), pare siano legati alla produzione endogena del testosterone, diidrosterone, dell’ormone luteinizzante (LH) e del deidroepiandrosterone (DHEA).
Tribulus terrestris
Family: Zygophyllaceae
And 'spread around the world in arid or semi-arid
The Latin scientific name Tribulus, drift Greek τρίβολος, originally was a weapon passive 4-point used by the ancient Romans, in his botanical significance was used by Pliny the Elder in his Naturalis Historia (21, 91) to designate the fruto of this plant in the form of a tetrahedron that vaguely resembles the tribble, but also of other plants such as: (Trapa natans, the water chestnut) and Virgil in the Georgics (1, 53).
Tribulus is considered a very important plant for its content of particular substances, used in various folk medicines, from Europe to China and India, as an aphrodisiac and protezioen of the liver.
Since this plant is extracted an important supplement capable of acrescere muscle mass and is used in physiotherapy "Oficial" for the treatment of certain diseases related to the sexual sphere.
Trivia:
tribulus terrestris became known in the mid-nineties in North America after Eastern European Olympic athletes confessed to having employed it to better their athletic performance, basic. Ii active compounds of tribulus terrestris are called steroidal saponins and are found mainly in its aerial parts while the glycosides furistanol and sprirostanol (two of these compositions), it seems to be related to the endogenous production of testosterone, diidrosterone, luteinizing hormone (LH) and dehydroepiandrosterone (DHEA).
Tribulus terrestris
Familia: Zygophyllaceae
está presente en todo el mundo en zonas áridas o semi-áridas
El nombre científico en latín Tribulus, deriva τρίβολος griego, originalmente era un arma pasiva 4 puntos utilizada por los antiguos romanos, en su interés botánico fue utilizado por Plinio el Viejo en su Naturalis Historia (21, 91) para designar el Fruto de esta planta en la forma de un tetraedro que se parece vagamente la tribble, sino también de otras plantas, tales como: (Trapa natans, la castaña de agua) y Virgilio en las Geórgicas (1, 53).
Tribulus es considerada una planta muy importante por su contenido de sustancias particulares, que se utiliza en varios medicamentos populares, desde Europa a China y la India, como un afrodisíaco y protezioen del hígado.
Dado que esta planta se extrae un suplemento importante capaz de masa muscular acrescere y se utiliza en fisioterapia "Oficial" para el tratamiento de algunas enfermedades relacionadas con la esfera sexual.
Curiosidad:
El Tribulus terrestris se conoció a mediados de los años noventa en América del Norte después de los atletas olímpicos de Europa del Este confesaron haber empleado a mejorar su rendimiento deportivo, básico. Ii compuestos activos de tribulus terrestris son llamados saponinas esteroides y se encuentran principalmente en su parte aérea, mientras que el glucósidos furistanol y sprirostanol (dos de estas composiciones), parece estar relacionada con la producción endógena de testosterona, diidrosterone, hormona luteinizante (LH) y dehidroepiandrosterona
(DHEA)
8 pointed Star Tetrahedron (Merkaba) all wood sculpture. One of the Archimedes Solids and one of the basics of sacred geometry. I clear coated this one for the photo to show the cross shadows easier, because these are very difficult to see in a two dimensional photograph.
2 Tetrahedron interwoven plus all of the inner struts that also form an octahedron. 24 pieces total (excluding stand).
1 — Small (inverted) Tetrahedron
2 — Truncated Tetrahedron
3 — Big Tetrahedron
4 — Big Truncated Tetrahedron
Note. Models 1 and 2 have the same edge length: just one Geomag green rod, while models 3 and 4 has a three rods length edge instead.
See the explanations below. Read also the sections about Cubes and Octahedrons, Dodecahedrons and Icosahedrons and Pyramids and Prisms.
a Tetrahedron with an Octahedron nested inside, to show the point / vertex relationship between these two Platonic Solids.
There are so many combinations of 2-3 4 or more Platonic Solids, Archimedian Solids et al, that I would be busy for quite a while making them all!
These are permanently attached with small dowel rods at each of the contact points. The Octahedron is stained in cherry wood and the tetrahedron is just clear coated. Turn it on any of its 4 sides and its exactly the same symmetry.
Me encanta que al lado de mi casa, en mitad de la calle, haya dos sitios en los que se pueden encontrar los cinco sólidos platónicos: tetraedro cubo, octaedro, dodecaedro e icosaedro. No tengo ni idea de dónde vienen, pero ahí están, como si nada, siendo sólo cinco y los cinco juntos. Platón por madrid...
1 — Pyramid
2 — Bipyramid
3 — Prism
4 — Antiprism
Note. All these polyhedra have the same edge length: just one Geomag rod.
See the explanations below. Read also the sections about Tetrahedrons, Cubes and Octahedrons and Dodecahedrons and Icosahedrons.
See explanations below.
Click here to see all my Geomag Polyhedra.
Cliccate qui per vedere tutti i miei poliedri costruiti col Geomag
See explanations below.
Click here to see all my Geomag Polyhedra.
Cliccate qui per vedere tutti i miei poliedri costruiti col Geomag
Tribulus terrestris
Famiglia: Zygophyllaceae
E’ diffuso in tutto il mondo nelle zone aride o sub-desertiche
Il nome scientifico latino Tribulus, deriva del Greco τρίβολος, originalmente era un’arma passiva a 4 punte usata dagli antichi romani, nel suo significato botanico è stato usato da Plinio il vecchio nella sua Historia naturalis (21, 91) per designare il fruto di questa pianta a forma di tetraedo che ricorda vagamente il tribolo, ma anche di altre piante come per esempio: (Trapa natans, la Castagna d’acqua) e da Virgilio nelle Georgiche (1, 53).
Il tribulus è considerata una pianta molto importante per il suo contenuto di sostanze particolari, usato nelle varie medicine popolari, dall’Europa alla Cina e all’India, come afrodisiaco e protezioen del fegato.
Da questa pianta si estrae un importante integratore capace di acrescere la massa muscolare e viene usata nella fisioterapia “uficiale” per la cura di alcune patologie legate alla sfera sessuale.
Curiosità
il Tribulus terrestris divenne famoso nella metà degli anni novanta nel Nord America, dopo che gli atleti olimpionici dell’est europeo confessarono di averla utilizzata per migliore le loro prestazioni atletiche, di base. Ii composti attivi del tribulus terrestris si chiamano saponine steroidee e si trovano principalmente nelle sue parti aeree mentre i glicosidi furistanol e lo sprirostanol (due delle suddette composizioni), pare siano legati alla produzione endogena del testosterone, diidrosterone, dell’ormone luteinizzante (LH) e del deidroepiandrosterone (DHEA).
Tribulus terrestris
Family: Zygophyllaceae
And 'spread around the world in arid or semi-arid
The Latin scientific name Tribulus, drift Greek τρίβολος, originally was a weapon passive 4-point used by the ancient Romans, in his botanical significance was used by Pliny the Elder in his Naturalis Historia (21, 91) to designate the fruto of this plant in the form of a tetrahedron that vaguely resembles the tribble, but also of other plants such as: (Trapa natans, the water chestnut) and Virgil in the Georgics (1, 53).
Tribulus is considered a very important plant for its content of particular substances, used in various folk medicines, from Europe to China and India, as an aphrodisiac and protezioen of the liver.
Since this plant is extracted an important supplement capable of acrescere muscle mass and is used in physiotherapy "Oficial" for the treatment of certain diseases related to the sexual sphere.
Trivia:
tribulus terrestris became known in the mid-nineties in North America after Eastern European Olympic athletes confessed to having employed it to better their athletic performance, basic. Ii active compounds of tribulus terrestris are called steroidal saponins and are found mainly in its aerial parts while the glycosides furistanol and sprirostanol (two of these compositions), it seems to be related to the endogenous production of testosterone, diidrosterone, luteinizing hormone (LH) and dehydroepiandrosterone (DHEA).
Tribulus terrestris
Familia: Zygophyllaceae
está presente en todo el mundo en zonas áridas o semi-áridas
El nombre científico en latín Tribulus, deriva τρίβολος griego, originalmente era un arma pasiva 4 puntos utilizada por los antiguos romanos, en su interés botánico fue utilizado por Plinio el Viejo en su Naturalis Historia (21, 91) para designar el Fruto de esta planta en la forma de un tetraedro que se parece vagamente la tribble, sino también de otras plantas, tales como: (Trapa natans, la castaña de agua) y Virgilio en las Geórgicas (1, 53).
Tribulus es considerada una planta muy importante por su contenido de sustancias particulares, que se utiliza en varios medicamentos populares, desde Europa a China y la India, como un afrodisíaco y protezioen del hígado.
Dado que esta planta se extrae un suplemento importante capaz de masa muscular acrescere y se utiliza en fisioterapia "Oficial" para el tratamiento de algunas enfermedades relacionadas con la esfera sexual.
Curiosidad:
El Tribulus terrestris se conoció a mediados de los años noventa en América del Norte después de los atletas olímpicos de Europa del Este confesaron haber empleado a mejorar su rendimiento deportivo, básico. Ii compuestos activos de tribulus terrestris son llamados saponinas esteroides y se encuentran principalmente en su parte aérea, mientras que el glucósidos furistanol y sprirostanol (dos de estas composiciones), parece estar relacionada con la producción endógena de testosterona, diidrosterone, hormona luteinizante (LH) y dehidroepiandrosterona
(DHEA)
Tribulus terrestris
Famiglia: Zygophyllaceae
E’ diffuso in tutto il mondo nelle zone aride o sub-desertiche
Il nome scientifico latino Tribulus, deriva del Greco τρίβολος, originalmente era un’arma passiva a 4 punte usata dagli antichi romani, nel suo significato botanico è stato usato da Plinio il vecchio nella sua Historia naturalis (21, 91) per designare il fruto di questa pianta a forma di tetraedo che ricorda vagamente il tribolo, ma anche di altre piante come per esempio: (Trapa natans, la Castagna d’acqua) e da Virgilio nelle Georgiche (1, 53).
Il tribulus è considerata una pianta molto importante per il suo contenuto di sostanze particolari, usato nelle varie medicine popolari, dall’Europa alla Cina e all’India, come afrodisiaco e protezioen del fegato.
Da questa pianta si estrae un importante integratore capace di acrescere la massa muscolare e viene usata nella fisioterapia “uficiale” per la cura di alcune patologie legate alla sfera sessuale.
Curiosità
il Tribulus terrestris divenne famoso nella metà degli anni novanta nel Nord America, dopo che gli atleti olimpionici dell’est europeo confessarono di averla utilizzata per migliore le loro prestazioni atletiche, di base. Ii composti attivi del tribulus terrestris si chiamano saponine steroidee e si trovano principalmente nelle sue parti aeree mentre i glicosidi furistanol e lo sprirostanol (due delle suddette composizioni), pare siano legati alla produzione endogena del testosterone, diidrosterone, dell’ormone luteinizzante (LH) e del deidroepiandrosterone (DHEA).
Tribulus terrestris
Family: Zygophyllaceae
And 'spread around the world in arid or semi-arid
The Latin scientific name Tribulus, drift Greek τρίβολος, originally was a weapon passive 4-point used by the ancient Romans, in his botanical significance was used by Pliny the Elder in his Naturalis Historia (21, 91) to designate the fruto of this plant in the form of a tetrahedron that vaguely resembles the tribble, but also of other plants such as: (Trapa natans, the water chestnut) and Virgil in the Georgics (1, 53).
Tribulus is considered a very important plant for its content of particular substances, used in various folk medicines, from Europe to China and India, as an aphrodisiac and protezioen of the liver.
Since this plant is extracted an important supplement capable of acrescere muscle mass and is used in physiotherapy "Oficial" for the treatment of certain diseases related to the sexual sphere.
Trivia:
tribulus terrestris became known in the mid-nineties in North America after Eastern European Olympic athletes confessed to having employed it to better their athletic performance, basic. Ii active compounds of tribulus terrestris are called steroidal saponins and are found mainly in its aerial parts while the glycosides furistanol and sprirostanol (two of these compositions), it seems to be related to the endogenous production of testosterone, diidrosterone, luteinizing hormone (LH) and dehydroepiandrosterone (DHEA).
Tribulus terrestris
Familia: Zygophyllaceae
está presente en todo el mundo en zonas áridas o semi-áridas
El nombre científico en latín Tribulus, deriva τρίβολος griego, originalmente era un arma pasiva 4 puntos utilizada por los antiguos romanos, en su interés botánico fue utilizado por Plinio el Viejo en su Naturalis Historia (21, 91) para designar el Fruto de esta planta en la forma de un tetraedro que se parece vagamente la tribble, sino también de otras plantas, tales como: (Trapa natans, la castaña de agua) y Virgilio en las Geórgicas (1, 53).
Tribulus es considerada una planta muy importante por su contenido de sustancias particulares, que se utiliza en varios medicamentos populares, desde Europa a China y la India, como un afrodisíaco y protezioen del hígado.
Dado que esta planta se extrae un suplemento importante capaz de masa muscular acrescere y se utiliza en fisioterapia "Oficial" para el tratamiento de algunas enfermedades relacionadas con la esfera sexual.
Curiosidad:
El Tribulus terrestris se conoció a mediados de los años noventa en América del Norte después de los atletas olímpicos de Europa del Este confesaron haber empleado a mejorar su rendimiento deportivo, básico. Ii compuestos activos de tribulus terrestris son llamados saponinas esteroides y se encuentran principalmente en su parte aérea, mientras que el glucósidos furistanol y sprirostanol (dos de estas composiciones), parece estar relacionada con la producción endógena de testosterona, diidrosterone, hormona luteinizante (LH) y dehidroepiandrosterona
(DHEA)
Santa Claus tetrahedron box by Yamaguchi Makoto. I love this box!
Caja tetraedro Papa Noel de Yamaguchi Makoto. Hermoso modelo para quedar genial.
Diagram: Tanteidan Magazine 136.
Pirámide trigonal realizada con delicas montada en un marcapáginas de metal. Es para Mario :) He conseguido hacerlo gracias a la explicación que nos dio volinka, gracias!
Completando os 'sólidos Platônicos', o octaedro, o tetraedro e o cubo.
O cubo, com a técnica ' dança dos quadrados', é um puff.
Potete vedere un filmato di questo modello in funzione cliccando qui.
Click here to see a movie of this model functioning.
Foto en Instagram: ift.tt/2D2qUzr. Este sólido arquimediano semirregular también es llamado también troncotetraedro. Es el resultado de truncar hasta un tercio de la arista los vértices de un tetraedro. Tiene 8 caras (4 hexágonos regulares y 4 triángulos equiláteros) 18 aristas y 12 vértices.
Tetrahedron I folded, out of my previous basic module, for Flickr friends and clever origamists Papyraceous and Hans-Werner Guth...
6 sheet of printer printed (recycled let's say) paper 80 gr. cut into rectangle 1:2
Joints are very strong but I would suggest rectangles in proportion 1:5 for better appearence and space legibility.
@Papyraceous: 50 years of luck? Is this what I wrote? I'm going to fold a FIT out of this module right tonight and then go to the casino... :-))) Many many many thanks... if it was not for your incentive probably I would have never gone further... now I can really see the potentials of this module in teaching geometry.... thanks thanks thanks a lot! If you go for the FIT... I'll go for Bucky's dome! Have a wonderful and lucky week-end!
@Hans-Werner Guth: thanks for your enthusiasm and your energy!!!!!! :-D
El último paso será unir el tetraedro compuesto por cuatro celdas al hilo. esto se hace atravesando el papel con dos pequeños agujeros y atando el hilo al vértice superior.
Almofadas em formato dos Sólidos Platônicos:
O Cubo, Dodecaedro e Icosaedro
Agora, só faltam o Tetraedro e o Octaedro
Existem apenas cinco sólidos regulares: o tetraedro, o hexaedro (ou cubo), o octaedro, o dodecaedro e o icosaedro. Respectivamente, com quatro, seis, oito, doze e vinte faces. São conhecidos como sólidos platônicos. Platão teorizou sobre serem a base para a organização do mundo físico. Platão escreveu sobre eles no diálogo Timaeus c.360 AC, no qual ele associou cada um dos quatro elementos da natureza (terra, ar, água e fogo) com um sólido regular. A terra foi associada ao hexaedro, o ar com o octaedro, a água com o icosaedro. Sobre o quinto sólido platônico, o dodecaedro, Platão observou que “Deus o utilizou para dispor as constelações em todo o firmamento”.
O dodecaedro da foto foi feito com puro cristal de quartzo brasileiro.
There are only five regular solids: the tetrahedron, the hexahedron (cube), the octahedron, the dodecahedron and the icosahedron. Respectively, with four, six, eight, twelve and twenty faces. They are known as Platonic solids. Plato theorized about being the base for the structure of the physical world. Plato wrote about them in the dialogue Timaeus c.360 B.C. in which he associated each of the four classical elements (earth, air, water, and fire) with a regular solid. Earth was associated with the cube, air with the octahedron, water with the icosahedron, and fire with the tetrahedron. The fifth Platonic solid, the dodecahedron, Plato obscurely remarks, "...the god used for arranging the constellations on the whole heaven".
The dodecahedron of the picture is made of pure Brazilian quartz crystal.