Before clocks, there were candle clocks, that when burned, effectively indicated the passage of periods of time especailly indoor & at night. To set an alarm, you pushed a nail into the desired point and the nail would ld fall and clank on the metal holder https://t.co/oDVXgmTaYq pic.twitter.com/rYqjAPYf1Q
— Massimo (@Rainmaker1973) July 25, 2023
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