Around 500 CE, Indian astronomer Aryabhata presented a mathematical system that took the Earth to spin on its axis and considered the motions of the planets with respect to the Sun. He also made an accurate approximation of the Earth's circumference and diameter, and also discovered how the lunar eclipse and solar eclipse happen. He gives the radius of the planetary orbits in terms of the radius of the Earth/Sun orbit as essentially their periods of rotation around the Sun. He was also the earliest to discover that the orbits of the planets around the Sun are ellipses.
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Anonymous2008-04-21 21:49
Wooden movable type was first developed around 1040 AD by Bi Sheng (990–1051), as described by the Chinese scholar Shen Kuo (1031–1095), but was abandoned in favour of clay moveable types due to uneveness of the moveable wooden type after soaked in ink, also due to the presense of wood grains.[11] In 1298, Wang Zhen, a governmental official of Jingde, Anhui province, China, re-invented a method of making moveable wooden types. He made more than 30,000 wooden movable types and printed 100 copies of Records of Jingde County (旌德县志), a book of more than 60,000 Chinese characters. Soon afterwards, he summarized his invention in his book A method of making moveable wooden types for printing books.
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Anonymous2008-04-21 21:58
Yeah, right.
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Anonymous2008-04-21 22:08
The Antikythera mechanism is an ancient mechanical calculator (also described as the first "mechanical computer") designed in Rhodes to calculate astronomical positions. It was discovered in the Antikythera wreck off the Greek island of Antikythera, between Kythera and Crete, in 1900. Subsequent investigation, particularly in 2006, dated it to about 150-100 BC, and hypothesised that it was on board a ship that sank en route from the Greek island of Rhodes to Rome, perhaps as part of an official loot. Technological artifacts of similar complexity did not reappear until a thousand years later.
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Anonymous2008-04-21 22:13
Abū al-'Iz Ibn Ismā'īl ibn al-Razāz al-Jazarī (1136-1206) (Arabic: أَبُو اَلْعِزِ بْنُ إسْماعِيلِ بْنُ الرِّزاز الجزري) invented the crankshaft, connecting rod, the lamination of timber to minimize warping, the static balancing of wheels, the use of wooden templates (a kind of pattern), the use of paper models to establish designs, the calibration of orifices, the grinding of the seats and plugs of valves together with emery powder to obtain a watertight fit, and the casting of metals in closed mold boxes with sand. Al-Jazari invented the segmental gear, and first described a method for controlling the speed of rotation of a wheel using an escapement mechanism and described several early mechanical controls, including a combination lock and a lock with four bolts.
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Anonymous2008-04-22 0:03
Rakeem Washington (1964-1983) invented carjacking and the broken-off-car-radio-antenna crackpipe.
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Anonymous2008-04-22 0:49
Eastern Europeans are the only white people who think they invented everything. And that they defeated the Mongols and Turks all by themself.