Saturday, August 9, 2008

Petronas Towers

Two twin buildings of Petronas, those are an oil company owned by Malaysia and multinational company and association firm of Malaysia is two twin buildings of skyscraper which is located in Kuala Lumpur, Malaysia. This part is the part of a big construction which is signed by the sharp increase of country economy in 1990; those buildings build in north part of high-tech business zone, in Malaysia. This Petronas towers are built by cement columns which is supported by steel covered by stainless steel and glass with design based on geometric patterns that come from traditional Islamic architecture. The towers designed by Argentina-American architect whose named is Cesar Pelli, is included one of the highest building in the world which height reaches 452 m (1,483 ft). The building of 88 floors is connected at 41-th and 42-th floors by a fly over bridge, and every tower is limited by tower peak of height 22 ft (74 m). At the lower level, the petronas towers also have a concert hall which is the place for musical concert and business reference library of Malaysia. The building of this tower is finished in 1997 which are higher than Sear Chicago tower as the record holder of the highest building before. But in 2003, Petronas towers are beaten of their height by Taipei 101 tower.

Source:

ing.infoplace.com

John Dalton (1766 - 1844)


John Dalton was a British chemist which born from noble family. Dalton was the first man that gives explanation scientifically about color-blind (1794), a condition which he suffers and known as "Daltonism". Dalton noted more than 200,000 atmosphere research and researched gas mixture and gas expansion when they were heated. Dalton's law is still used to describe the law of partial pressure in chemistry. This work brought him to his greatest contribution in chemistry, that is an atomic theory of matter which has scientific base. He started teaching his discovery in 1803 and published his discoveries in A New System of Chemical Philosophy in 1808.


Source :


http://www.english.upenn.edu/