Origami Butterfly by Akira Yoshizawa - tutorial Today is the 101st birthday of Akira Yoshizawa, the great origami master and the father of the modern origami. You have probably noticed that Google marked the occasion with a special origami doodle created by Robert Lang! Why not celebrate the event by making your own origami butterfly?! Here is a step-by-step tutorial for a 3-d variation of a classic butterfly by Akira Yoshizawa (first spotted on Nick Robinson’s blog), enjoy! UPD. Tags: Akira Yoshizawa, Animals Lana Red Studio Sonobe The Sonobe module is one of the many units used to build modular origami. The popularity of Sonobe modular origami models derives from the simplicity of folding the modules, the sturdy and easy assembly, and the flexibility of the system. The history of the Sonobe module[edit] The origin of the Sonobe module is unknown. Two possible creators are Toshie Takahama and Mitsunobu Sonobe, who published several books together and both members of Sosaku Origami Group 67. The unit[edit] An opened Toshie's Jewel'. Each individual unit is folded from a square sheet of paper, of which only one face is visible in the finished module; many ornamented variants of the plain Sonobe unit that expose both sides of the paper have been designed. The Sonobe unit has the shape of a parallelogram with 45 and 135 degrees angles, divided by creases into two diagonal tabs at the ends and two corresponding pockets within the inscribed center square. Models made With a Sonobe unit[edit] Notes and references[edit]
The Rise and Fall of the Maya Empire The Classic Period, which began around A.D. 250, was the golden age of the Maya Empire. Classic Maya civilization grew to some 40 cities, including Tikal, Uaxactún, Copán, Bonampak, Dos Pilas, Calakmul, Palenque and Río Bec; each city held a population of between 5,000 and 50,000 people. At its peak, the Maya population may have reached 2,000,000. Excavations of Maya sites have unearthed plazas, palaces, temples and pyramids, as well as courts for playing the ball games that were ritually and politically significant to Maya culture. The Maya were deeply religious, and worshiped various gods related to nature, including the gods of the sun, the moon, rain and corn. The Classic Maya built many of their temples and palaces in a stepped pyramid shape, decorating them with elaborate reliefs and inscriptions. Serious exploration of Classic Maya sites began in the 1830s.
from {panka} with love Caught On A Whim La Geometria degli origami La forza degli origami di Liz Newton (traduzione a cura di Marco Crespi)versione originale su Plus Magazine. Una breve storia degli origami Sebbene gli origami siano tutt’oggi sinonimo di Giappone, la prima traccia di questa tradizione arriva dalla Cina, dove la carta venne prodotta fin dal 200 come alternativa economica alla seta. Pegaso realizzato da Robert J. Gli origami iniziarono così a diffondersi in Giappone. E questo sarebbe rimasto se non fosse stato per l’operaio giapponese Akira Yoshizawa. Con la pratica, Yoshizawa sviluppò alcune tecniche pionieristiche come quella del “wet folding” (letteralmente piega bagnata) che permetteva schemi più complicati e la possibilità di realizzare su un singolo foglio un maggior numero di curve. Con il disegno di schemi sempre più complessi, questa arte iniziò ad attirare l’interesse dei matematici che avevano la stessa ideaa di Yoshizawa: c’era una grande intersezione tra l’arte di piegare la carta e la Geometria. Gli elementi di Euclide . a dove
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