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How did the glass?

The origin of the glass, like many inventions, it was a matter of chance. In Ancient Egypt unknown Potter, the firing of pots noticed that in some places the surface of the pot is smooth and transparent. And it happened because the pot has got a mixture of sand and soda, which, when the firing became glassy film, glaze. So there was glass, and soon the Egyptian masters were made from glass vases, cups, decorations. By the way, the age of one glass objects found by archaeologists - 5,5 thousand years.

 


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Alena
2014-04-07 15:48:51
uuuuuuuuuuuuuu
Camellia
2013-01-20 19:45:18
well
Masha
2012-04-03 07:06:13
bite
haha
2012-03-20 11:45:51
By the way I had to replace it And
Daniela
2012-03-20 11:43:11
no
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