TIL that before there were clocks, there were candle clocks that burned a set amount of hours.
If you wanted a reminder or alarm, you pushed a nail at the desired time length in the candle and when it melted to that point, the nail would fall and clank on the metal holder alerting you.
If you wanted a reminder or alarm, you pushed a nail at the desired time length in the candle and when it melted to that point, the nail would fall and clank on the metal holder alerting you.
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