| |
| | History of technology - Wikipedia, the free encyclopedia |
 | | The Three-age system does not accurately describe the technology history of groups outside of Eurasia, and does not apply at all in the case of some populations, such as the Spinifex People, the Sentinelese, and various Amazonian tribes, which still make use of Stone Age technology, and have not developed agricultural or metallurgical technology. |
 | | Major technological contributions from China include early seismological detectors, matches, paper, sliding calipers, the double-action piston pump, cast iron, the iron plough, the multi-tube seed drill, the wheelbarrow, the suspension bridge, the parachute, natural gas as fuel, the magnetic compass, the raised-relief map, the propeller, the crossbow, and gun powder. |
 | | Timekeeping which had been done by hand, by priests, and then for commerce, with watchmen to note time, as part of their duties, was advanced as the tabulation of the equinoxes became standardized, and the sandglass was replaced with the water clock, whcih became more accurate over time. |
| en.wikipedia.org /wiki/History_of_technology (2785 words) |
|