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Benvenuti in queste pagine dedicate a scienza, storia ed arte. Amelia Carolina Sparavigna, Torino

Wednesday, April 20, 2011

Sugawara no Michizane

Sugawara no Michizane che cavalca un bufalo.
Utagawa Sadakage (attivo dal 1818-1844)
Sugawara no Michizane (845-903) venne divinizzato
come dio protettore delle lettere e della calligrafia.
Viene rappresentato spesso sotto fiori di susino a
cavallo di un bufalo, che lo accompagna durante
l'esilio dalla capitale.
Museo Arte Orientale

Hokusai manga - supernatural

The Hokusai Manga (北斎漫画) is a collection of sketches of various subjects by the Japanese artist Hokusai. Subjects of the sketches include landscapes, flora and fauna, everyday life and the supernatural... The Manga comprise literally thousands of images in 15 volumes, the first published in 1814, when the artist was 55. The final three volumes were published posthumously, two of them assembled by their publisher from previously unpublished material.
more Wiki


Museo Arte Orientale

World Wide Words: Rule of thumb

"The expression rule of thumb has been recorded since 1692 and probably wasn’t new then. It meant then what it means now — some method or procedure that comes from practice or experience, without any formal basis. Some have tried to link it with brewing; in the days before thermometers, brewers were said to have gauged the temperature of the fermenting liquor with the thumb ... This seems unlikely, as the thumb is not that sensitive and the range of temperatures for fermentation between too cool and too warm is quite small. It is much more likely that it comes from the ancient use of bits of the body to make measurements. There were once many of these: the unit of the foot comes from pacing out dimensions; the distance from the tip of the nose to the outstretched fingers is about one yard; horse heights are still measured in hands (the width of the palm and closed thumb, now fixed at four inches); and so on. "
World Wide Words: Rule of thumb

Invisibility cloaks

Novel cloaking device makes 'larger' objects invisible, 20 April 2011 | By Andrew Czyzewski
"Researchers have developed a novel ‘cloaking carpet’ that is able to conceal objects far larger relative to its size than previous devices. Now, a group of researchers from Denmark and the UK has tested a novel metamaterial cloaking device that is only around four times the size of the object it was able to conceal....‘Instead of transforming the cloaked area to a point invisible to our eyes, a carpet cloak disguises the obstacle from light by making it appear like a flat ground plane,’ said Shuang Zhang of Birmingham University, who worked on the project alongside colleagues from Imperial College London and the Technical University of Denmark...The researchers used metamaterials, which are engineered to have optical properties not found in nature, but used a novel grating structure comprising a series of slits or openings to redirect a beam of light."

Astronomical sensors for terrestrial use

QMC adapts astronomical sensors for terrestrial use, 19 April 2011 | By Andrew Czyzewski
"Highly sensitive astronomical sensors are being adapted for commercial, terrestrial uses in security, quality control and medical imaging. The technology, which is being developed by QMC Instruments, was originally used in space telescopes such as Plank and Herschel to peer into the far corners of the universe.
It focuses on terahertz radiation, the far infrared and microwave portion of the electromagnetic spectrum that astronomers use to study the Cosmic Microwave Background and dust clouds where stars are born.
In the past decade or so there has been increasing interest in producing and detecting terahertz radiation from terrestrial sources. Indeed, the latest generation of airport body scanners emit terahertz radiation at a defined frequency, which passes through clothes and to a lesser extent the body, but not metals.
However, the latest technology differs in that it is entirely passive, and is able to detect small amounts of terahertz radiation from endogenous sources such as the human body and certain objects such as explosives — essentially acting like a video camera, viewing the contrast in real time".
QMC adapts astronomical sensors for terrestrial use | News | The Engineer

Aymara language

AYMARA, 2,000,000 SPEAKERS in Bolivia, and Peru
from the DICTIONARY OF LANGUAGES, The Definitive Reference to more than 400 Languages, by
Andrew Dalby,A & C Black , London
"One of the AMERIND LANGUAGES, Aymara is spoken on the high Andes plateaus near Lake Titicaca. Aymara shows many similarities with neighbouring Quechua. An argument continues as to whether the languages have the same origin, or have grown together in the course of shared cultural development. Hermann Steinthal, at the 8th International Congress of Americanists in Berlin in 1888, asserted the former. J. Alden Mason, in the Handbook of South American Indians, argued that in their basis the languages had `little in common' but that they shared a large number of words,`perhaps as much as a quarter of the whole, obviously related and probably borrowed'. Some modern researchers favour Steinthal, positing a `Quechumaran' grouping to include both Quechua and Aymara; the majority, probably, agree with Mason. At any rate, there certainly has been cultural influence between the two.A hundred years before the Spanish conquest, Aymara territory had become part of the Inca empire. The west Peruvian dialects of Quechua show strong Aymara influence, as if Aymara had once been spoken there. The Aymara language has a traditional form of picture writing, used until quite recently to produce versions of Christian religious texts. This seems to represent an early stage in the typical development of writing - an aid to the memory, used for fixed texts such as catechisms and the Lord's Prayer, in which the texts are at least half-remembered. In this picture writing the characters are not standardised or used in the same way in different places. There are often fewer signs than words: just enough to recollect to the user's mind what he needs to say. The majority of signs are pictures of people and things.Some others are symbolic, and the meaning of signs can bestretched by means of puns and homophones. Aymara in this traditional script was at first written on animal skins painted with plant or mineral pigments: later, paper was used. In modern Bolivia, where the largest community of speakers is to be found, Aymara is now written in the Latin alphabet. The orthography, introduced in 1983, follows Spanish practice. Books and magazines are regularly published, notably by the Evangelical and Catholic churches. Many Bolivians are trilingual in Aymara, Quechua and Spanish. Thus, besides its Quechua elements, Aymara has now many Spanish loan-words, though they are much altered to fit the sound pattern: winus tiyas for Spanish buenos dias, wisiklita for bicicleta. The first ten numerals in Aymara are:
maya, paya, kimsa, pusi, phisqa, suxta, paqallqu, kimsaqallqu, llatunka, tunka."

Rogue Waves

"The storm was nothing special. Its waves rocked the Norwegian Dawn just enough so that bartenders on the cruise ship turned to the usual palliative — free drinks.
Then, off the coast of Georgia, early on Saturday, April 16, 2005, a giant, seven-story wave appeared out of nowhere. It crashed into the bow, sent deck chairs flying, smashed windows, raced as high as the 10th deck, flooded 62 cabins, injured 4 passengers and sowed widespread fear and panic."
From
"Rogue Giants at Sea", by W.J. Broad
http://www.nytimes.com/2006/07/11/science/11wave.html?8dpc

Tuesday, April 19, 2011

World Wide Words: Action at a distance

"It first appeared in English in the word telescope. This was a usage adapted from Galileo’s Italian word telescopi for his new device, which he seems to have first used in 1611; two years later, Kepler employed the modern Latin telescopium. Galileo and Kepler apparently tried out a series of other names before settling on telescope, including perspicillum, conspicillum, specillum, and penicillium; if they had decided to use one of the others, it is very possible that we should now not have all these words starting in tele–."
World Wide Words: Action at a distance

Recovering the raised fields - Peru

Google Maps give beautiful pictures of the Earth. We have seen and shown in several posts that the satellite eye is able to display in great detail the archaeological remains and ruins. Let me show you here three images of some raised fields near the Lake Titicaca. These waru-warus (raised fields in Aymara language) are near Caritamaya.




According to a private communication (ConNuestroPeru), the archaeologists
are recovering some waru-warus having circular and radial shapes.

In fact, several waru-warus create geoglyphs featuring animals. 



The "raised fields" are earthworks separated by canals. This is an ancient agricultural technique used by Andean people starting from the first millennium BC. Each raised field is approximately 10 meters large and more than one hundred long. 

More on waru-waru
 arXiv:1009.4602 [pdfGeoglyphs of Titicaca as an ancient example of graphic design, Amelia Carolina Sparavigna
 arXiv:1009.2231 [pdfSymbolic landforms created by ancient earthworks near Lake Titicaca, Amelia Carolina Sparavigna


Monday, April 18, 2011

Moth-Eye Structures for Broadband Antireflection


Appl. Phys. Express 3 (2010) 102602 (3 pages)  |Previous Article| |Next Article|  |Table of Contents|
|Full Text PDF: FREE (763K)|

Hybrid Moth-Eye Structures for Enhanced Broadband Antireflection Characteristics


The authors are proposing hybrid moth-eye structures to have high antireflection propoerties. These structures can be applied to solar cells for high light -to-electricity cinversione efficiency



URL: http://apex.jsap.jp/link?APEX/3/102602/
DOI: 10.1143/APEX.3.102602

Moth eyes for solar cells

"Photovoltaics, which convert sunlight into electricity, have long been touted as one of the most promising solutions to our energy needs. Unfortunately, today's devices reflect a lot of solar energy as heat, which means that solar power is currently not as cheap as other forms of energy. Now, however, researchers in the Netherlands have developed an anti-reflective coating based on the nanostructure of a moth’s eyes, which could reduce the reflection from photovoltaic cells and thereby make them more efficient"
Moth eyes inspire more efficient solar cell - physicsworld.com

The trash vortex

"The trash vortex is an area the size of Texas in the North Pacific in which an estimated six kilos of plastic for every kilo of natural plankton, along with other slow degrading garbage, swirls slowly around like a clock, choked with dead fish, marine mammals, and birds who get snared. Some plastics in the gyre will not break down in the lifetimes of the grandchildren of the people who threw them away."
The trash vortex | Greenpeace International
"Il Pacific Trash Vortex, noto anche come Grande chiazza di immondizia del Pacifico (Great Pacific Garbage Patch), è un enorme accumulo di spazzatura galleggiante (composto soprattutto da plastica) situato nell'Oceano Pacifico, approssimativamente fra il 135º e il 155º meridiano Ovest e fra il 35º e il 42º parallelo Nord. La sua estensione non è nota con precisione: le stime vanno da 700.000 km² fino a più di 10 milioni di km² ... ovvero tra lo 0,41% e il 5,6% dell'Oceano Pacifico. ... L'accumulo si è formato a partire dagli anni cinquanta, a causa dell'azione della corrente oceanica chiamata Vortice subtropicale del Nord Pacifico (North Pacific Subtropical Gyre), dotata di un particolare movimento a spirale in senso orario, che permette ai rifiuti galleggianti di aggregarsi fra di loro.
http://it.wikipedia.org/wiki/Pacific_Trash_Vortex

Cotton on World Wide Words

Interessante la discussion sul "cotton on".
World Wide Words E-magazine: 16 Apr 2011
Il termine "cotonato" lo usamo per i capelli, mentre in Inglese si parla di "big hair"

Dharmacakra

"The Dharmacakra symbol is represented as a chariot wheel (Sanskrit cakram) with eight or more spokes. It is one of the oldest known Buddhist symbols found in Indian art, appearing with the first surviving post-Harappan Indian iconography in the time of the Buddhist king Aśoka. The Dharmacakra has been used by all Buddhist nations as a symbol ever since. In its simplest form, the Dharmacakra is recognized globally as a symbol for Buddhism." According Wiki http://en.wikipedia.org/wiki/Dharmacakra

Kongo Rikishi come Ercole

"Kongōrikishi are an interesting case of the possible transmission of the image of the Greek hero Heracles to East Asia along the Silk Road. Heracles was used in Greco-Buddhist art to represent Vajrapani, the protector of the Buddha, and his representation was then used in China and Japan to depict the protector gods of Buddhist temples. This transmission is part of the wider Greco-Buddhist syncretic phenomenon, where Buddhism interacted with the Hellenistic culture of Central Asia from the 4th century BC to the 4th century AD.*"
According to Wiki http://en.wikipedia.org/wiki/Shukongoshin
* "The origin of the image of Vajrapani should be explained. This deity is the protector and guide of the Buddha Sakyamuni. His image was modeled after that of Hercules. (...) The Gandharan Vajrapani was transformed in Central Asia and China and afterwards transmitted to Japan, where it exerted stylistic influences on the wrestler-like statues of the Guardian Deities (Nio)." (Katsumi Tanabe, "Alexander the Great, East-West cultural contacts from Greece to Japan", p23)

Sunday, April 17, 2011

Hokusai manga - cat


Un gatto di Hokusai
Museo Arte Orientale, Torino

Kongo Rikishi


Kongo Rikishi stante su base rocciosa
legno di cipresso giapponese dipinto, altezza cm 230,5
Giappone, periodo Kamakura, seconda metà XIII secolo

Imponente statua realizzata con pezzi assemblati (yosegi-zukuri). Rappresenta uno dei due guardiani del tempio e della dottrina buddhista posti in coppia ai lati della porta dei monasteri. Ha la bocca chiusa e contratta per esprimere l’esplosivo hum, il terribile mantra delle divinità furiose.


Museo Arte Orientale, Torino

Saturday, April 16, 2011

Raised fields and qochas

The "raised fields" are an ancient agricultural technique, based on the used of earthworks and a system of canals and ponds for water. This technique was used in South America, long before Columbus. Near the Titicaca Lake, it is possible to see using the Google Maps, a huge area marked by the remains of this agricultural system. In fact, some local farmers are still using old raised fields.

Are the following structures I found by means of Google Maps, modern or ancient?
Have they a symbolic meaning?

The "sun wheel"
Comparison 2011-2010
Another "sun wheel"
Two circular and radial structures.
The location of these images is the Chicchapampa, Lake Titicaca. 
To see other geoglyphs of Titicaca, use please the label "Geoglyphs".

Friday, April 15, 2011

Moray Inca ruin


Moray, after processing of a Google Maps image

Moray is an archaeological site in Peru approximately 50 km northwest of Cuzco. The site contains unusual Inca ruins, mostly consisting of several enormous terraced circular depressions, the largest of which is about 30 m deep. Wiki reports a very interesting information: the depth and orientation with respect to wind and sun of the depression creates a temperature difference of as much as 15 °C between the top and bottom. According to Wiki "this large temperature difference was possibly used by the Inca to study the effects of different climatic conditions on crops. In other words, Moray was perhaps an Inca agricultural experiment station. As with many other Inca sites, it also has a sophisticated irrigation system."

Andenes as level curves


Andenes as level curves, near Ayacucho, Peru
After processing a Google Maps image.

"Andenes are terraces dug into the slopes of mountains for agricultural purposes. They were constructed and much used in the Andes mountain range to provide cultivable hillsides. The majority of these terraces were constructed and used by the pre-Hispanic cultures, and many can still be observed throughout the region."

Another wheel



A geoglyph near Chicchapampa, Lake Tititcaca, Peru, 

Sun wheel


A geoglyph at Chicchapampa,  Lake Titicaca 
Image adapted from Google Maps.

see also

Thursday, April 14, 2011

Stellar vibrations

"Scientists have long known that the atmosphere of the Sun oscillates. In the same way seismologists use earthquakes to model the interior of the Earth, helioseismologists use vibrations observed on the Sun to probe deeper into our star. Oscillations of about 25 other stars have also been studied in the emerging field of asteroseismology. Now, thanks to the Kepler space telescope, a team led by Bill Chaplin, at the University of Birmingham, UK, has increased this figure significantly."
Kepler picks up stellar vibrations - physicsworld.com

Elusive WIMPS

On the XENON collaboration to find WIMPS
WIMP no-show casts a shadow over dark matter - physicsworld.com

Monday, April 11, 2011

SNEWS

When a red giant star collaps on itself a burst of neutrinos is produced. This occurs before that light is emitted in the explosion, The SuperNova Early Warning System (SNEWS) is a network of neutrino detectors designed to give an early warning to astronomers of a supernova event in the Milky Way. The neutrino pulse from supernova 1987A was detected 3 hours before the photons.
The current members of SNEWS are Borexino, Super-Kamiokande, LVD, SNO and IceCube.
http://en.wikipedia.org/wiki/Supernova_Early_Warning_System

Neutrinos in IceCube

The IceCube Neutrino Observatory (or simply IceCube) is a neutrino telescope constructed at the Amundsen-Scott South Pole Station in Antarctica. Similar to its predecessor, the Antarctic Muon And Neutrino Detector Array (AMANDA), IceCube contains thousands of spherical optical sensors called Digital Optical Modules (DOMs), each with a photomultiplier tube (PMT) and a single board data acquisition computer which sends digital data to the counting house on the surface above the array. More http://en.wikipedia.org/wiki/IceCube_Neutrino_Observatory
"IceCube, which was completed in December 2010, is a kilometer-cubed array of photodetectors that have been drilled down into the Antarctic ice cap... The IceCube team compared 13 months of their data (collected when the array was half finished) to observations of 117 Gamma-Ray Bursts measured independently over the same time period. Contrary to expectations, no high-energy neutrinos were detected within a half-hour of each GRB. Theorists may need to rethink their models of GRBs, as well as look for other possible sources for the highest energy cosmic rays." This is what Michael Schirber writes in
http://physics.aps.org/synopsis-for/10.1103/PhysRevLett.106.141101

Il Buddha dei Leoni


Il Buddha siede su un trono sorretto da tre leoni, che poggia a sua volta su un piedistallo fiancheggiato da due  devoti monaci. La veste monastica dalle pieghe accuratamente disegnate e priva di cintura rivela il corpo ben modellato. Il lembo dello scialle scende dalla spalla sinistra terminando in un doppia “coda di pesce”.
Il leone in questa iconografia evoca  il suo ruggito (simhanada) ossia la voce del Buddha che penetra lo spazio divulgando la Dottrina.
Museo Arte Orientale, Torino

Friday, April 8, 2011

Planets heated by dark matter

Audacious notion of the week: planets heated by dark matter - March 30, 2011
"It’s dark outside, permanently. The sun twinkles in the distance barely bigger than other stars. But the ground is warm, and oceans are teaming with life. That’s the scenario envisioned by Dan Hooper and Jason Steffen of Fermi National Laboratory in Batavia Illinois, who released a preprint yesterday about the possibility of dark matter heating planets that are otherwise too far from their host stars to be habitable."
More Nature.com

According to Dan Hooper and Jason Steffen, they " have calculated the capture rate of dark matter particles in Earth-like and super-Earth planets, and determined the resulting surface temperature of those planets that would result from dark matter annihilations. While planets in the local region of our galaxy receive only a negligible quantity of energy from dark matter annihilations," the authors" find that planets in dwarf spheroidal galaxies and in the innermost volume of the Milky Way could plausibly accumulate and annihilate enough dark matter to heat their surfaces to temperatures capable of sustaining liquid water, even in the absence of energy from starlight or other standard sources. Although" they "expect ecologically relevant quantities of energy to be released through dark matter annihilations only within the interiors of planets that reside in very special environments (such as near the Galactic Center, or near the center of a dwarf spheroidal galaxy), and only in the case of dark matter models which feature large elastic scattering cross sections with nuclei (near the current upper limits)," the authors "expect that within such models planets will exist which derive enough heat from dark matter to almost indefi nitely sustain surface temperatures suffi cient to yield liquid water. Even in the absence of starlight, such planets could plausibly contain life. And, given their extremely long lifetimes, such planets may prove to be the ultimate bastion of life in our universe."

Tevatron claims glimpse of particles beyond standard model

Tevatron claims possible glimpse of particles beyond the standard model - April 06, 2011
"Just as the Tevatron, the proton-antiproton collider at Fermilab in Batavia, Illinois, enters its final months of operations, possible signals of new physics are emerging. First came a report from the Collider Detector at Fermilab (CDF) experiment of a puzzling asymmetry in the way top quarks decay into lighter particles. Now the same experiment is reporting on the possible observation of particles beyond the standard model in collisions that produce a W boson – a particle of the weak nuclear force. Spokesmen for the experiment say the signal may be due to random fluctuations, but that it’s nonetheless causing some excitement. “Either what we thought we knew about this process is wrong or there’s a totally new effect,” says Giovanni Punzi, CDF co-spokesman."

Chankillo - 2 - Peru


Image obtained after processing Google Maps

The Thirteen Towers of Chankillo are built north to south along a ridge of a low hill, regularly spaced. To the east and west investigators found two observation points, to observe the rising and setting positions of the Sun over the year. This suggests that some activities of the ancient civilization were regulated by a solar calendar. The towers had been known to travelers for centuries, but the astronomical function of the towers was discovered in 2007 by Iván Ghezzi and Clive Ruggle. 
Read more Wiki

Chankillo - 1 - Peru


Chankillo
Image obtained after processing Google Maps

Chankillo is an ancient monumental complex in the Peruvian coastal desert, in the Ancash Department of Peru. The ruins include the hilltop Chankillo fort, the nearby Thirteen Towers solar observatory, and residential and gathering areas. The Thirteen Towers are believed to have been a solar observatory built in the 4th century BC. As of 2008, the culture that produced Chankillo is unnamed.
More wiki

Thursday, April 7, 2011

Einstein secret

James Dacey (physicsworld) is blogging on a new iconic image of Einstein, creation of Spanish artist Juan Osbourne. It is a game to find some hidden numbers.
Play the game at
http://www.juanosborne.com/2010/01/playing-with-einstein/

einsteinface.jpg
Created by Juan Osborne (under this Creative Commons License)
This is an image from a beautiful collection

The hunt for the elusive Higgs

"Physicists at CERN's Large Hadron Collider (LHC) are confident that they can find the Higgs boson by the end of 2012, when the machine will be shut down temporarily...The most sought after particle in particle physics – the Higgs boson – is believed to endow all other particles with mass. It is also the last undiscovered component of particle physicists' great theoretical framework – the Standard Model. After decades searching for the Higgs in particle collisions at CERN, and at Fermilab in the US, researchers at the LHC believe they may finally have the elusive particle within their grasp."
The hunt for the elusive Higgs - physicsworld.com

Thin film has 'astonishing' ability to rotate light

"Physicists in Austria and Germany have taken the Faraday effect to a new extreme by rotating the polarization of light by 45° by passing it through an extremely thin film. This "giant Faraday effect" could someday be used to create optical transistors that switch light or to improve terahertz imaging systems."
Thin film has 'astonishing' ability to rotate light - physicsworld.com

The teacher appears

But lo! the teacher Jizô appears,
All gently he comes, and says to the weeping infants:
"Be not afraid, dears! be never fearful!
Poor little souls, your lives were brief indeed!
Too soon you were forced to make the weary journey to the Meido,
The long journey to the region of the dead!
Trust to me! I am your father and mother in the Meido,
Father of all children in the region of the dead."
And he folds the skirt of his shining robe about them;
So graciously takes he pity on the infants.
To those who cannot walk he stretches forth his strong shakujô,
And he pets the little ones, caresses them, takes them to his loving bosom.
So graciously he takes pity on the infants.
Namo Jizo Bosatsu!

The Legend of the Humming of the Sai-no-Kawara,
by Lafcadio Hearn (Koizumi Yakumo)

Jizo - matrix of the earth

Jizo was a bodhisattva (bosatsu in Japanese), a man who achieved enlightenment but forsaked nirvana to help others find paradise. He was worshiped  as the protector of those in distress, of children, of mothers in childbirth, and of travelers.  Worship of the bodhisattva Jizo began in the eighth century with the importation of esoteric Buddhist practices from China. Jizo, whose name means "matrix of the earth," was revered as one of the Eight Great Bodhisattvas of the esoteric sect. Jizo and his counterpart, Kakuzo ("matrix of the void"), represent the union of the physical and metaphysical realms.
The Jizo figure is defined by his clothing, by the objects he holds, and by his physical attributes. His head is shaven, and he is dressed in monk's robes, a simple rectangle of cloth (kesa) tied in front over a longer skirt. In his left hand, Jizo holds a wish-granting jewel; he would have held a shakujo (jingle-staff) in his right. The shakujo was used to alert insects and small animals of his approach, so that he would not accidentally harm them. Jizo's idealized face and head-the perfectly proportioned features, third eye, elongated ears, and folds of skin at the neck-also show attributes of an enlightened being.
adapted from http://www.lacma.org/japaneseart/sculpture/jizo.htm

Jizo Bosatsu



Il bodhisattva Jizo
Legno laccato e dipinto
Giappone, fine del periodo Muromachi, XV-XVI sec.

Jizo Bosatsu, il bodhisattva Jizo, è venerato in Giappone come colui che interviene a trarre i fedeli dagli inferni in cui possono essere caduti. Nell’iconografia del Buddhismo giapponese è ritratto nelle vesti di un monaco dalla testa rasata, munito del bastone del pellegrino e del “gioiello che esaudisce tutti i desideri”. L’assenza di corona e ornamenti è compensata dall’eleganza regale del manto e della tunica decorati con ricami dorati di ispirazione cinese e centro-asiatica. La statua faceva parte della collezione del barone Wilhelm von Bode.

Buddha assiso


Buddha assiso - Gandhara

Le figure sono ricavate all’interno di un arco. L’arco poggia su due lesene con capitelli che richiamano le foglie di acanto dei capitelli corinzi. Sui capitelli sono collocati due grifoni dalle code fiammeggianti. Il Buddha è assiso, la gamba sinistra piegata a terra e il ginocchio destro sollevato su cui poggia il gomito destro. La mano destra mancante era sostegno al volto inclinato in atteggiamento pensoso. Al disopra della spalla destra del Buddha si scorge la figura di Vajrapani che impugna il simbolo del fulmine di Indra. Il fregio alla base del pannello presenta scene dalla vita di Shakyamuni e la sua figura emaciata dalle pratiche ascetiche intraprese prima dell’Illuminazione.

Museo Arte Orientale, Torino 

Le sorgenti del Nilo

Nerone promosse nel 62, o 67 d.C., una spedizione per scoprire le fonti del Nilo. Fu comandata da due legionari, che risalirono il Nilo verso l'Africa equatoriale partendo da Meroe, vicino a Karthoum, l'attuale capitale del Sudan.
More wiki

Friday, April 1, 2011

Leonardo's dream

"A research team at Festo has developed SmartBird, a biomechatronic bird that can take off, fly and land autonomously. Festo claims that SmartBird flies, glides and moves through the air like its counterpart in nature — the herring gull — with no additional drive mechanism."
Guardate il filmato al sito:
Festo's biomechatronic bird flies and lands autonomously | News | The Engineer