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The Antikythera mechanism, a sort of analogous computer working with a differential gear, and the astrolabe each show nice refinement in astronomical science. In music, the water organ, invented by Ctesibius and subsequently improved, constituted the earliest occasion of a keyboard instrument.

In many Eurasian cultures, the Iron Age was the last main step earlier than the development of written language, though again this was not universally the case. Before iron smelting was developed the only iron was obtained from meteorites and is often identified by having nickel content. Meteoric iron was uncommon and useful, however was sometimes used to make instruments and different implements, corresponding to fish hooks.

Coal converted to coke fueled larger temperature blast furnaces and produced cast iron in a lot bigger quantities than before, permitting the creation of a spread of constructions similar to The Iron Bridge. Cheap coal meant that trade was now not …