Abstract
Chalcolithic man was clearly aware of the many useful features of copper that made it preferable to stone or organic materials for some specialized applications. Among these properties were its elasticity and particularly plasticity, which allowed sheets or chunks of copper to be given useful shapes. Chalcolithic man also exploited the fact that copper hardens during hammering, that is, as a result of plastic deformation. Last but not least, molten copper can be cast into molds to obtain more intricate shapes. On the negative side, surface oxidation and gases trapped during melting and casting which may form porosity were probably of some concern to Chalcolithic man. More importantly, however, cast copper is quite soft and thus could hardly be used for strong weapons or tools. Eventually, the time had come for a change through innovation. A new material had to be found. This material was bronze; see Fig. 4.1.
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Suggestions for Further Study
W.T. Chase, Ancient Chinese Bronze Art, China House Gallery, China Institute in America, New York (1991).
B. Cunliffe (Editor), The Oxford Illustrated Prehistory of Europe, Oxford University Press, Oxford (1994).
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© 1998 Springer Science+Business Media New York
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Hummel, R.E. (1998). The Bronze Age. In: Understanding Materials Science. Springer, New York, NY. https://doi.org/10.1007/978-1-4757-2972-6_4
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DOI: https://doi.org/10.1007/978-1-4757-2972-6_4
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