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Nearly all the
technological knowledge needed to manufacture
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optical glass
was present since the ancient times.
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Glass occurs in
Egypt and Babylon in 2600 B.C., bottles were
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made 14th -
15th century B.C., and large scale production in
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Egypt dates
from the 6th century B.C.
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Glass blowing
is discovered at Sidon in the first century and
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clear glass is
made at Alexandria at about the same time. In
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Roman times
glassworks are established in Italy, Spain, and
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the Rineland.
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In the 13th
century Venice again discovers how to make clear
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glass and
established a virtual monopoly.
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