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20 sett 1000 anni a. C. - Abacus and steel

Descrizione:

The abacus is used as an everyday method of calculation by Phoenicians and Babylonians

Iron reheated with carbon is found to be much harder, being transformed into steel

Aggiunto al nastro di tempo:

Evolution Timeline

ByDalynn Paredes
27 ott 2017
0
0
670

Data:

20 sett 1000 anni a. C.
Adesso
~ 3028 years ago

Immagini:

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