Question

Who designed a shadow clock​

Answer 1

Answer: Egyptians

Explanation:

Answer 2

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Around 3,500 BCE (a long, long time ago), the Egyptians used the shadows the giant stone obelisks cast on the ground to tell the time of day. Each obelisk was built to tell a story. But they worked very well as shadow clocks. Later on, the ancient Egyptians invented the first portable timepiece.

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