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History of Science and Technology – Era – Prehistory

History of Science & Technology

Era - Prehistory


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-7000 – copper age
-5,000 – wheel and axle
-3500 – glass
-3300 – bronze age
-3100 – Stonehenge started -3100 - Stonehenge started
-3,000 – abacus
-2750 – first pyramids built -2750 - first pyramids built
-1900 – pi
-1500 – iron age
-1400 – steel
-0800 – Baudhayana – bio