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A parachute is a device used to slow the motion of an object through an atmosphere by creating drag or aerodynamic lift. A major application is to support people, for recreation or as a safety device for aviators, who can exit from an aircraft at height and descend safely to earth. A parachute is usually made of a light, strong fabric.
Instructions for making astronomical instruments from the time of the Qing dynasty.. Ancient Chinese scientists and engineers made significant scientific innovations, findings and technological advances across various scientific disciplines including the natural sciences, engineering, medicine, military technology, mathematics, geology and astronomy.
The compass in the Four Great Inventions was formerly the compass of ancient China. It is a kind of direction-indicating tool, which is widely used in navigation, field exploration and other fields. In ancient times, it had a profound influence on trade, war and cultural exchange.
More than 2,000 years ago, however, an ancient Chinese inventor, Zhang Heng, made the world’s first seismoscope which proved to be incredibly accurate. Called the Houfeng Didong Yi, Zhang Heng ...
The history of aviation spans over two millennia, from the earliest innovations like kites and attempts at tower jumping to supersonic and hypersonic flight in powered, heavier-than-air jet aircraft. Kite flying in China, dating back several hundred years BC, is considered the earliest example of man-made flight. [ 1 ]
Stained glass depiction of Eilmer of Malmesbury. According to Aulus Gellius, the Ancient Greek philosopher, mathematician, astronomer, statesman, and strategist Archytas (428–347 BC) was reputed to have designed and built the first artificial, self-propelled flying device, a bird-shaped model propelled by a jet of what was probably steam, said to have actually flown some 200 metres around ...
Astronauts from China’s Tiangong space station returned to Earth this week despite an apparent hole in the parachute of their spacecraft’s landing module.. On Tuesday, three astronauts Jing ...
Huolongchushui were the primary inspiration for the man-portable artillery depicted in Disney's Mulan films. [citation needed]Huolongchushui are discussed in Liu Cixin's 2010 science-fiction novel Death's End (on page 98 of 766 of the 2016 English translation by Ken Liu), as a comparison to a fictional multistage nuclear-propelled space probe.