Background Stage 18 Flashcards
How did glass makers come to Alexandria
When Alexandria was founded in 332 bc , craftsman flocked to the city to practise and Improve their skills , among these craftsman were glass makers
What is glass made from
Sand and sodium carbonate , produced from the ash of certain plants.
What’s the earliest use for glassmaking
Glazing pottery
What did glass makers experiment with
Different shapes and colours
What was discovered about glass
That if glass is heated until it becomes semi liquid that it can be shaped and left to harden.
How was glass first shaped
By wrapping molten glass around a clay or sand core, which had been moulded into the shape required . When the glass hardens the core is then scraped or washed out. This however was only suitable for making small vessels such as perfume containers
How do you make colured glass
By adding different chemicals. Blue green brown and white were the most commen colors
How were vessels decorated
By trailing thin lines of molten glass into the finished vessel. Often in typical Alexandrian style , known as millefiori
How were bowls made
Small pieces if colored glass were arranged in a mold and then heated until they fused together
When was glass blowing discovered
In first century b.c in Syria or Egypt
What is glass blowing
Wrapping molten glass around the end of a hollow pipe and shaping it by blowing through the pipe. First you dip the pipe onto the crucible above the furnace and take a blob of molten glass . Then blow steadily down the pipe to make a hollow bubble. By carefully reheating and repeated blowing the bubble can be made very big
How can one produce different glass shakes by glass blowing
By swinging the bubble gently while blowing or using special tools for shaping or cutting . Identical objects can be produced by blowing the glass into a mold
How did glassblowing change the glassmaking industry
Glass could be made quickly and efficiently and glass could be used to make ordinary house hold objects. The fame if Alexandrian glass spread and the glass makers prospered
When were the earliest Egyptian glass vessels discovered
Found i Egyptian tombs , 1500 bc
Why was Egypt fertile
South of Alexandra stretch the third tell valley of the River Nile. Each year the Nile flooded water in the land and depositing rich new soil on the fields. This produced not only enough corn to supply the whole of Egypt but also a large surplus to be exported. However the profits from the corn trade benefited only a small number of people