Fundraiser: Server Costs 2019
Please help us cover our server costs for this year. We are a non-profit organization and we would rather spend the money on our mission to engage people with cultural heritage and to improve history education worldwide.
c. 1600 BCE
water-clocks in use.
c. 450 BCE
Parapegma star calendar invented in
by Meton and Euctemon.
c. 275 BCE
Ctesibius invents first sophisticated multi-cogged water-clock.
c. 159 BCE
First water-clock set up in
c. 110 BCE - c. 50 BCE
Tower of The Winds by Andronicus constructed in
c. 50 BCE
Antikythera instrument invented, an astronomical measuring device.
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1600 BCE: Earliest Egyptian water-clocks in use.
450 BCE: First klepsydra - water timekeeping device - used in Athens.
450 BCE: Parapegma star calendar invented in Greece by Meton and Euctemon.
275 BCE: Ctesibius invents first sophisticated multi-cogged water-clock.
159 BCE: First water-clock set up in Rome.
110 BCE - 50 BCE: Tower of The Winds by Andronicus constructed in Athens.
50 BCE: Antikythera instrument invented, an astronomical measuring device.
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