Sunday, August 29, 2010
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Saturday, August 28, 2010
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Photo 2: Quarry location Selva Palladino
Photo 3: "Redeemer" dominated by a huge tower with antennas of all kinds
Photo 4: the intensive rearing of pigs on the hill of the "Selva di Sotto"
Photo 5: The Quarry "ex Bove" behind the "pure" Monte Pugliano
6: storage of used tires.
7: storage of tires 2.
8: Industrial sheds as the eye can e. .. Soil
Thursday, August 26, 2010
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Preface
I decided to take a quick journey through history of astronomical knowledge of the 'ancient Asian people because it had a cultural growth independent of the developed West in ancient times. A hypothetical history of scientific thought would be incomplete omitting astronomical studies, tools and measurements of the ancient Chinese observers.
The Chinese civilization is much older than the Greek and Roman even if it was earlier civilizations that developed along the Nile and in Mesopotamia. It 'difficult to prove that Chinese astronomers made important measurements before the Egyptians and Babylonians; it is important to consider at least a comparison between China and Western civilization as regards the study of the movements of the stars on the celestial sphere, because to a certain point in time it has evolved in parallel and independently.
We realize that the Chinese astronomy, unlike the Greeks, for example, has developed from studies of a small number of solitary individuals but it was a discipline in the service of empire. The great importance of the imperial astronomers was directly proportional to the thoroughness of their comments, whose primary purpose was to draw up a timetable. The precision with which they were made is that they assume the best record of ancient astronomy, at least until the time of the Arabs.
Astronomy China has never developed a predictive theory mathematization of motion of the stars as it has been in the West, since the purpose of the observations had a purely practical.
astronomical survey instrument
The Chinese were the first astronomers to make observations on the sun using special rods embedded perpendicular to the ground, the gnomons . Subject
of measurements was the same length of the shadow cast by the gnomon on a horizontal plane when the star on the meridian that passes to the south. This direction was easily deduced from the fact that the length of the shadow of the gnomon falls gradually until the dawn of the day at a certain point and then resume rising.
The direction of the shadow at the lowest point is the direction of the south. Then, having noticed that this direction down the length of shadow at meridian passage varied within a certain range and had a length and a maximum. Those days are, respectively, the summer solstice and the winter.
The gnomons were provided with a horizontal scale, in terms of which were carried out measurements of the shadow. If the gnomon is short on the scale divisions should be extremely tight and precise, if it is long it is easier to read the subdivisions but the shadow is unclear and poorly defined. Astronomers avoid this fact by using a rod parallel to the land located at the top of the gnomon and a sheet of metal with a central pinhole in the horizontal plane. The definer shadow could be rotated and moved back and forth to make sure that the light could pass through the hole. This' which was projected on the horizontal plane was a small bright spot in the middle with the bar positioned sideways: the gnomonic hole had the function to focus like a lens, the image dell'asticella placed in the top of the gnomon. The measure
gnomonic shadow was also used to measure the latitude of a place to establish territorial boundaries. With this practice Chinese astronomers also were able to calculate the obliquity of the ecliptic. In fact, once you know the maximum height of the sun in the days of the winter solstice and summer solstice simple calculations lead to the determination of both quantities.
If the Earth in its motion of revolution around the sun was not inclined, as indeed it is, the height of the sun on the horizon to the meridian passage is always the same on any day of the year. In a reference system integral with the sun, we could always see the Earth's axis perpendicular to the plane of the orbit. This actually happens only during the equinoctial. Also in a solidarity with the sun we could imagine seeing the earth move along the plane of the meridian passage of time on the day of the winter solstice at the same time on the day of the summer solstice. The direction of the Earth would vary with respect to the sun as a kind pendulum with the highest of oscillations in the days of the solstices.
So to measure the obliquity of the ecliptic is enough to calculate half the angular difference between the height of the sun at meridian passage on the day of the winter solstice and summer. The book chou them, dating from around 1100 BC, gives the value 23.88
The passage on the meridian was the subject of the measurements for the night sky observation. Water clocks for determining the time interval between the rising or setting of the sun and the passage of a star on the meridian. The use of measuring time with the flow Water is really the ancient Chinese civilization. At the court of the Emperor, there was a ministry official, whose office was hereditary, which dealt exclusively with the construction and calibration.
Chinese astronomy was mainly based on observation of the circumpolar stars and had a polar-equatorial character. You immediately notice the difference with the West, in which the positions of the stars were reported to the ecliptic. The Chinese model was correct for the fact that the observation of stars placed near the north pole is easier to put the observations of stars along the ecliptic, because under a certain height in the sky they are no longer visible due to atmospheric turbulence.
The distribution of the sky was completely different from the West, and consisted of about 250 small constellations, the most famous of which, the Dragon has come down to our skies. This constellation, which has become a national symbol, once held the pole star, as can be seen by considering the motion of precession of the equinoxes and the resulting shift of the north celestial pole.
E 'can then calculate the exact position of the north celestial pole at any historical period. In the year 2500 BC is calculated by the following map Equatorial
Wednesday, August 25, 2010
Clip Art The Roots Of A Plant
Adapted from http://www.portalasporta.it
In 2007, San Francisco has banned plastic bags the largest department store chains and food and pharmacy chains.
Now the city administration is considering extend the ban to all retailers, including bookstores, clothing stores and department stores and that would include all the possible formats and sizes of plastic bags.
Ross Mirkarimi, a member of the Supervisory Committee the city of San Francisco and author of Act of 2007
Even the State of California is currently the ' legislative process of a bill, the' Assembly Bill 1998, supported by Governor Arnold Schwarzenegger , which would ban plastic bags in all the state of California since 2012 with a tax of 5 cents for the paper bag provided.
The administration of San Francisco is not going to wait for developments of this bill because it is certain that the measures will be milder and less extensive than objectives to be achieved in a city . In San Francisco
the current law requires large supermarkets and chain drugstores to provide customers only compostable bioplastic bags, paper bags, recyclable and reusable bags.
The new legislation, if passed, would come into force March 1, 2011. In addition to apply to all sectors of retail trade expected as new charged five cents for disposable paper bag . Excluded from the measure intermediate bags for packing and packaging of food products but also, for example, plastic bags used by dry cleaners to protect clothing. According
Mark Westlund, spokesman for the Department for Environment, San Francisco, were 100 million plastic bags that were spared the environment three-year ban.
If the measure passed San Francisco would be the first city in California to follow the example of towns in the counties of Currituck, Dare, Hyde belonging to that region of the Outer Banks in North Carolina . Also here is the extension of a first measure limited to a few chains that will be effective from October 1, 2010.
Some shops have already moved to San Francisco from 2007 to paper bags. Stay at the local level, but not limited to, the accusation paper bags , even by the plastics industry, which emphasizes at every opportunity as even these were not without impact to the environment.
Compared to the solution in the plastic manufacturing paper bags require increased consumption of water, 70% more power and 50% of emissions of greenhouse gases caused most of the bag during his lifetime. Obviously
the plastics industry points out the weaknesses of the alternative paper and minimizes those related to the solution in plastic, non-biodegradable material, the dispersion in the environment with chemical pollution and its damages including economic ones , the ridiculous rates of recycling, the use of oil which is a source of energy in decline, and so on.
For more information read the environmental impact assessment referred to the plastic bag, paper and reusable material.
Tuesday, August 24, 2010
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I am a graduate student in astronomy. Very often I have to correct my partners and explain that I do not study astrology, and that there is a big difference. Some believe that there is a right to food.
morning television listings spend more 'time that horoscopes the weather or traffic. It rains and you'll be in line for hours whatever you are a scorpion or an aquarium.
's been a few tens of minutes. In the bar you read the first and last pages. Quickly scroll through the titles, then turn the paper and browse the contrary carefully reading the horoscope the astrologer guy. Not only trait but also that of the person or persons dear to us or to us enemies.
Moon conjunct Mars leads us to buy a nice scratch.
Disinformation is fought with the information, the idiocy can not be refuted because 'there is no counter-information that we provide for the future. Simply
these spaces in the TV listings in newspapers or should disappear.
For several months the news has been circulating (false) in 2012, due to a series of events of heaven, there will be a disaster that will destroy the earth.
I would not want the ignorance that most people continue to cultivate sidereal giving heed to these charlatans can be resolved in a similar way to famous nursery rhyme of "wolf wolf".
One day, when probably affect some extraterrestrial event 'life on earth, no one will believe the work and research scientists. We discuss the usual hoax and billions of people will eat from a single wolf.
finish reporting a story by Asimov: "The last days of civilization on the planet will be"
"Planet Saro enjoyed the view of only six, at least one of which was always high in the sky. The darkness, as the natural phenomenon, it was unknown and were therefore unknown as the stars. The inhabitants had evolved into a world of light without any psychological conditioning against darkness having a high susceptibility to claustrophobia when they were deprived of light. Saro astronomers were convinced of the smallness of their universe. Unable to see beyond their own system of six, were content to demonstrate that its complicated movements could be understood perfectly well using the same law of gravitation valid on the surface of Saro. These rationalists shared their world with Cultists, the idealists who were handed the 'old knowledge' of a world of light beyond the sky, and a future of darkness, when the world was over. Many did not give credit for Cultists accused of irrationalism, but others felt their beliefs a sort of confusion arising from a tradition the sky looks very old, characterized by light and darkness. When astronomers predicted the existence, in their solar system, a black moon, never seen it, that could be perceived only when it reached almost to the point of eclipsing one of their own, increased social tension. The presence of the moon was necessary to explain the complex movement of only six. Some astronomers calculated that it would have eclipsed the second sun of the system, just when the star was alone in the sky. The eclipse was total then. The news leaked out this expectation. The tension grew among the people, while fomenting a fever Cultists eschatological end of the world, the eclipse began to devour the disk of the sun alone to swallow up everything, and for the first time the people of the night I will be met. The darkness blotted out the sky, and tens of thousands of bright stars appeared, enveloping the planet in a sidereal time of flickering lights. I will, in fact, was not the sparsely populated outskirts of a galaxy like the Milky Way, it was immersed in the depths of a bunch of stars "