Sunday, 21 January 2007
Sunday, 14 January 2007
The first Sanxingdui relics were discovered by a farmer in 1929 and excavation has continued ever since. During this period, generations of archaeologists have worked on the discovery and research of the Sanxingdui culture. In 1986, two major sacrificial pits were found and they aroused widespread academic attention around the world.
The Sanxingdui finds are exciting, but they remain enigmatic. No texts have been found, nor is there any mention of this culture in the records of other countries. Analysis of lead and other elements in the bronzes indicates sources similar to those of other cultures along the lower reaches of the Yangtze River. At this point, however, the unique culture that produced these artifacts remains a mystery (View Pictures).
Friday, 12 January 2007
Sunday, 7 January 2007
Wednesday, 3 January 2007
Orange represents ocean temperatures at 82 degrees Fahrenheit or higher. This is the temperature required for hurricanes to form. The bottom left window shows wind analysis model data from NASA's Modeling, Analysis, and Prediction (MAP '05) program. The top right window shows rainfall accumulation for Hurricane Katrina from the TRMM spacecraft. The bottom right window shows energy-releasing deep convective clouds (as high as 16 km) in the eyewall of Hurricane Katrina. These clouds, called hot towers, formed on August 28 while the storm was intensifying to a category 5 hurricane.
Tuesday, 2 January 2007
Meteorites are natural objects that survive their fall to Earth from space.When the Solar System formed, approximately 4570 million years ago, asteroids and comets were produced along with the Sun and planets. Meteorites are fragments broken from asteroids, and are our only opportunity for direct study of the material from which the Solar System was built.
Meteorites come in several forms. Iron meteorites are almost entirely metallic iron with several weight percent nickel (e.g., Henbury), whilst some are mixtures of stone and metal (e.g., Krasnojarsk). The biggest groups of meteorites are the stony meteorites, which are made from the same minerals that make up rocks on Earth. Some stony meteorite are close to terrestrial basalts (rocks made from lava: e.g., Stannern), whilst others have not melted since they formed. These unmelted stones are known as chondrites (e.g., Parnallee, Plainview). Although almost all meteorites come from the Asteroid Belt, one group of meteorites comes from Mars. (e.g., Nakhla).
In 1938 Wassily Kandinsky published the text ‘My Woodcuts’ in the French periodical XXe Siècle. As was so often the case, when he wrote about his prints he focused largely on general artistic principles: the majority of the text is devoted to a general discussion of the need to privilege ‘synthesis’ over ‘analysis’ in both art and in life. However, he specifically referred to the album of poetry and engravings Sounds (Klänge), which had been published in Munich c.1912, as ‘a small example of synthetic work’