The origin and ceramic history [2/3]

In Protostoric age two fundamental evolutions of the ceramics technology happen: 1) the invention of the lathe; 2) the invention of a varnish adapted to cover, the vases surface.
A slow progress regards also the furnaces, than thanks elevated temperatures are obtained more.

In the rooms of baking of the furnace abundant oxygen and the mineral contained in the pigment, transforming itself in oxide, stretching to blacken this vascular painting of dark color finds employment in the micenee cities, than towards the 700 a.C. it comes said black varnish technical with prevalence of geometric figures and it is distinguished from that one with red figures, that it consists in coloring the parts that encircle the figures realizing one fate of image in negative on the black background.
In the period of the high Middle Ages they circulate nearly exclusively ceramic crude, lacking in covering and the lack of a wider market determines the birth of regional production and tradition.
With the beginning of the low Middle Ages it resume the commerce in the Mediterranean and in Italy arrive the Tunisine ceramics, Moroccans, Egyptians who were inserted in the above all religious architectures.

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